{"id":12512,"date":"2025-06-24T13:50:30","date_gmt":"2025-06-24T11:50:30","guid":{"rendered":"https:\/\/www.akustikforschung.de\/?p=12512"},"modified":"2026-01-15T08:45:29","modified_gmt":"2026-01-15T07:45:29","slug":"messsystem-schallleistung","status":"publish","type":"post","link":"https:\/\/www.akustikforschung.de\/en\/produkte\/messgerate\/messsystem-schallleistung\/","title":{"rendered":"Measuring system for sound power"},"content":{"rendered":"<p><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_city_light_poster_01_ed3_ws.jpg\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-12513\" style=\"margin-top: 0px;\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_city_light_poster_01_ed3_ws.jpg\" alt=\"Determination of the actual acoustic state of the frequency-dependent sound emission (sound power measurement) of a city light poster by measuring the sound pressure level at distributed measuring microphones on an imaginary enveloping surface\" width=\"500\" height=\"518\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_city_light_poster_01_ed3_ws.jpg 989w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_city_light_poster_01_ed3_ws-300x311.jpg 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_city_light_poster_01_ed3_ws-640x663.jpg 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_city_light_poster_01_ed3_ws-768x795.jpg 768w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<p>We offer the configuration and delivery of modular, multi-purpose acoustic and vibration measurement systems for your specific requirements.<\/p>\n<p>This includes multi-channel measuring systems for the <strong>simple<\/strong> and <strong>effective<\/strong> performance and analysis of sound power measurements at plants, machinery and devices \u2013 both <strong>in the field<\/strong> and <strong>in the laboratory<\/strong>.<\/p>\n<p><!--contentpartdivider--><\/p>\n<h4>Principle of measurements of sound power<\/h4>\n<p>The sound power indicates the sound emission of a machine regardless of its installation conditions and the prevailing ambient conditions on site, even if the basic measured variables determined for this purpose are different and can be measured in different ways.<\/p>\n<p>The DIN EN ISO 3740 series of standards is based on the measurement of the sound pressure level in the far field, i.e. in the direct field (on an imaginary enveloping surface) or in the diffuse field (at a distance greater than the reverberation radius) of the sound source to be examined. In contrast, the DIN EN ISO 9614 series of standards determines the sound power based on the measured sound intensity in the near field (on an imaginary enveloping surface) of the test object.<\/p>\n<p>Generally, the sound pressure level is measured using measuring microphones in conjunction with a multi-channel data acquisition unit; in rare cases, sound level meters are also used. In general, the sound intensity is measured using a sound intensity probe. Usually, an application-oriented analysis software with an intuitive graphical user interface enables the measurement signals to be analyzed and the sound power to be determined in accordance with standards.<\/p>\n<h4>Parameters of sound power<\/h4>\n<p>The measuring system for sound power allows the measurement of, among others, the following, mostly frequency-dependent parameters and associated acoustic quantities:<\/p>\n<ul>\n<li>sound pressure level at individual microphones around the sound source under investigation as well as calculated energetic mean values in conjunction with various time and frequency weightings, e.g. LAF, LAeq, LCF, LCeq<\/li>\n<li>sound pressure level on measurement surface Lm<\/li>\n<li>measurement surface value of imaginary enveloping surface LS<\/li>\n<li>sound intensity level LI<\/li>\n<li>sound power level Lw<\/li>\n<li>atmospheric pressure\/temperature correction K0<\/li>\n<li>background noise correction K1<\/li>\n<li>ambient correction K2<\/li>\n<\/ul>\n<h4>Components of measuring system for sound power<\/h4>\n<p>The components of the measurement system for sound power include among others:<\/p>\n<blockquote>\n<h4>Technical data (Excerpt)<\/h4>\n<h5>Measuring microphones and accessories<\/h5>\n<ul>\n<li>measuring microphone 1\/2\u201c, class 1\n<ul>\n<li>IEPE measuring microphone 1\/2&#8243; + preamplifier<\/li>\n<li>frequency range: 3,5 Hz \u2013 20 kHz<\/li>\n<li>dynamic range: 15 dB(A)-135 dB(A)<\/li>\n<li>BNC connector<\/li>\n<li>TEDS<\/li>\n<\/ul>\n<\/li>\n<li>measuring microphone 1\/4\u201c, class 1\n<ul>\n<li>IEPE measuring microphone 1\/4&#8243;<\/li>\n<li>4 mA IEPE\/ICP required<\/li>\n<li>UNF10-32\/BNC adapter<\/li>\n<\/ul>\n<\/li>\n<li>microphone calibrator, class 1\n<ul>\n<li>for measuring microphones 1\/2\u201c<\/li>\n<li>PTB approval, class 1<\/li>\n<li>1 kHz<\/li>\n<li>switchable between 94 dB \/ 114 dB<\/li>\n<li>adapter for measuring microphones 1\/4\u201c available<\/li>\n<\/ul>\n<\/li>\n<li>other available accessories\n<ul>\n<li>microphone fitting<\/li>\n<li>tripod for microphones<\/li>\n<li>connecting cable microphone-data acquisition unit<\/li>\n<li>windshield for microphones<\/li>\n<li>et al.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5>Sound intensity probes and accessories<\/h5>\n<ul>\n<li>sound intensity probe 1\/2&#8243;\n<ul>\n<li>2 IEPE measurement microphones 1\/2&#8243; + preamplifier<\/li>\n<li>spacer 12 mm und 25 mm<\/li>\n<li>remote control for analysis software Samurai<\/li>\n<li>connection cable 1.5 m with splitter<\/li>\n<li>case<\/li>\n<li>special version with USB set for use with NoisePAD&#x2122; available (see <a href=\"https:\/\/www.akustikforschung.de\/produkte\/messgerate\/messsystem-raumakustik-bauakustik\/\">measuring system for room acoustics and building acoustics<\/a>)<\/li>\n<\/ul>\n<\/li>\n<li>calibrator sound intensity probe\n<ul>\n<li>adapter for sound intensity probe 1\/2\u201c and 1\/4\u201d<\/li>\n<li>requires external generator (e.g. via analysis software Samurai with Apollo Box lt data acquisition unit and output adapter)<\/li>\n<\/ul>\n<\/li>\n<li>other available accessories\n<ul>\n<li>spacer 6 mm, 16,5 mm, 20 mm und 50 mm<\/li>\n<li>telescopic extension 3.2 m<\/li>\n<li>connecting cable sound intensity probe-data acquisition unit<\/li>\n<li>windshield for intensity probes<\/li>\n<li>et al.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5>Testing noise source<\/h5>\n<ul>\n<li>reference noise source\n<ul>\n<li>comparative sound source according to DIN EN ISO 6926<\/li>\n<li>incl. amplifier<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5 id=\"DAQ-Sound-Power\">Modular, scalable multi-channel data acquisition unit and accessories<\/h5>\n<ul>\n<li>Soundbook MK2\n<ul>\n<li>universally applicable 2-\/4- or 8-channel measuring system (incl. PC) for acoustics, vibration and general engineering measurements<\/li>\n<li>Panasonic Toughbook CF-19 with robust magnesium housing and convertible bright TFT display<\/li>\n<li>combination of maximum precision with a high number of channels and signal bandwidth<\/li>\n<li>2, 4 or 8 measurement channels, powerful 24-bit A\/D converter, phantom power \/ IEPE power supply, frequency range up to 80 kHz<\/li>\n<li>expandable with Soundbook MK2 expander to up to 40 synchronously operating measurement channels<\/li>\n<li>numerous other interfaces<\/li>\n<li>effective protection against heat, cold, rain, dust, vibration and heavy impacts<\/li>\n<li>LEMO7 or BNC input jacks<\/li>\n<li>moderate energy consumption<\/li>\n<li>PTB type approval 21.21 \/ 13.05, only PC-based verifiable analyzer<\/li>\n<\/ul>\n<\/li>\n<li>Soundbook MK2 Expander\n<ul>\n<li>flexible, portable 8-channel sound and vibration meter (requires additional PC) with high signal bandwidth, high dynamic range and integrated sensor power supply<\/li>\n<li>8 measuring channels with selectable variants with LEMO7 or BNC connectors, powerful 24-bit A\/D converter, phantom power supply \/ IEPE power supply, frequency range up to 80 kHz<\/li>\n<li>additionally 8 slow channels, 2 tacho and trigger channels, synchronization port and AUX port for universal use of the device<\/li>\n<li>can be expanded with additional modules via HUB to up to 40 synchronous measuring channels; coupling\/synchronization with Soundbook MK2 also possible<\/li>\n<li>reduction of data volume through individually adjustable sampling rate per channel<\/li>\n<\/ul>\n<\/li>\n<li>Apollo Box lt\n<ul>\n<li>cost-effective 2-\/4-\/8- or 16-channel sound and vibration analyzer in a robust, high-quality aluminum housing with USB interface (requires additional PC)<\/li>\n<li>2, 4, 8, or 16 measurement channels, powerful 24-bit A\/D converter, IEPE power supply, frequency range up to 20 kHz<\/li>\n<li>additional trigger\/tacho and output channels, frequency range up to 20 kHz<\/li>\n<li>BNC\/LEMO\/NIM CAMAC connectors<\/li>\n<li>particularly low power consumption enables operation with a tablet PC<\/li>\n<li>multiple Apollo lt modules can be synchronized with each other; sample rate can be individually adjusted for each channel<\/li>\n<\/ul>\n<\/li>\n<li>driver \/ libraries for hardware control\n<ul>\n<li>for external control of data acquisition unit for individual programming<\/li>\n<li>support among other things in MATLAB, Python, DASYLab, LabVIEW (requires respective programming environment)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5>Multifunctional data acquisition and analysis software Samurai<\/h5>\n<ul>\n<li>module Sound level meter<\/li>\n<li>module Fractional octaves\n<ul>\n<li>octave bands<\/li>\n<li>third octaves bands<\/li>\n<li>1\/24 octaves bands<\/li>\n<\/ul>\n<\/li>\n<li>module Sound intensity<\/li>\n<li>module Sound power for determining the sound power by measuring the sound pressure level on an imaginary enveloping surface or in a diffuse sound field in accordance with DIN EN ISO 3744, DIN EN ISO 3745 and DIN EN ISO 3746<\/li>\n<li>module Sound power for determining the sound power by measuring the sound intensity level in accordance with the DIN EN ISO 9614 series of standards (DIN EN ISO 9614-1, DIN EN ISO 9614-2 and DIN EN ISO 9614-3)<\/li>\n<li>module Sound field mapping for generation of color mappings of sound intensity (scanning method)<\/li>\n<li>module Synchronous FFT for determining vibration or sound spectra of rotating units at high background noise level by speed-synchronous averaging of complex FFT blocks<\/li>\n<li>module Virtual tachometer for determination of rotational speed and order analysis of rotating parts using the narrow-band spectrum of a sensor (e.g. microphone or accelerometer) if the use of a laser tachometer is not possible and no speed pulses are available (prerequisite: rotational frequency or harmonics thereof are sufficiently reflected in the spectrum used by local maxima)<\/li>\n<li>module <a href=\"https:\/\/www.akustikforschung.de\/leistungen\/sound-design\/\">Psychoacoustics<\/a> for determining the loudness and the sharpness of sounds<\/li>\n<li>et al.<\/li>\n<\/ul>\n<\/blockquote>\n<h4>Training and evaluation<\/h4>\n<p>We offer you and your employees training in the handling and operation of measurement technology and analysis software and create defined evaluation scripts upon request (e.g. in xlsx format).<\/p>\n<h4>Design of acoustic test benches according to standards, implementation of software solutions<\/h4>\n<p>Die Gesellschaft f\u00fcr Akustikforschung also supports you in the design of acoustic test benches (e.g. end-of-line tests) according to specific standards and\/or the implementation of customized software solutions for you.<\/p>\n<h4>Calibration<\/h4>\n<p>Furthermore, we offer you the option of having the input channels of the data acquisition unit calibrated by a DAkkS-certified body. Thereby, a combined test by free-field and pressure chamber calibration of sound level meters according to DIN EN 61672-3 with acoustic calibration of the amplitude frequency response in the free field from 125 Hz to 20 kHz (free-field calibration) and in the pressure chamber from 31.5 Hz to 100 Hz (pressure chamber calibration) is applied.<\/p>\n<p><!--contentpartdivider--><\/p>\n<div id=\"attachment_12466\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_messmikrofon_mv210_mk250_measuring_microphone_ws.png\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12466\" class=\"wp-image-12466 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_messmikrofon_mv210_mk250_measuring_microphone_ws-300x35.png\" alt=\"Measurement of sound power\" width=\"300\" height=\"35\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_messmikrofon_mv210_mk250_measuring_microphone_ws-300x35.png 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_messmikrofon_mv210_mk250_measuring_microphone_ws.png 626w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12466\" class=\"wp-caption-text\">Measuring microphone 1\/2&#8243;<\/p><\/div>\n<div id=\"attachment_12465\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_messmikrofon_m370_measuring_microphone_ws.png\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12465\" class=\"wp-image-12465 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_messmikrofon_m370_measuring_microphone_ws-300x78.png\" alt=\"Measurement of sound power\" width=\"300\" height=\"78\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_messmikrofon_m370_measuring_microphone_ws-300x78.png 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_messmikrofon_m370_measuring_microphone_ws-640x167.png 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_messmikrofon_m370_measuring_microphone_ws.png 725w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12465\" class=\"wp-caption-text\">Measuring microphone 1\/4\u201c with UNF10-32\/BNC adapter<\/p><\/div>\n<div id=\"attachment_12517\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_schallintensitaetsmesssonde_sis190_intensity_probe_ws.png\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12517\" class=\"wp-image-12517 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_schallintensitaetsmesssonde_sis190_intensity_probe_ws-300x167.png\" alt=\"Measurement of sound power\" width=\"300\" height=\"167\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_schallintensitaetsmesssonde_sis190_intensity_probe_ws-300x167.png 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_schallintensitaetsmesssonde_sis190_intensity_probe_ws.png 450w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12517\" class=\"wp-caption-text\">Sound intensity probe 1\/2&#8243; with spacer 12,5 mm<\/p><\/div>\n<div id=\"attachment_12518\" style=\"width: 210px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_schallintensitaetssonde_sis190_intensity_probe_case_ws.png\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12518\" class=\"wp-image-12518\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_schallintensitaetssonde_sis190_intensity_probe_case_ws-300x328.png\" alt=\"Measurement of sound power\" width=\"200\" height=\"218\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_schallintensitaetssonde_sis190_intensity_probe_case_ws-300x328.png 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_schallintensitaetssonde_sis190_intensity_probe_case_ws.png 521w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/a><p id=\"caption-attachment-12518\" class=\"wp-caption-text\">Sound intensity probe 1\/2\u201c with connection cable and splitter, remote control for analysis software Samurai and case<\/p><\/div>\n<div id=\"attachment_12715\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/12\/messsystem_schallleistung_referenzschallquelle_vergleichsschallquelle_reference_noise_source.jpg\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12715\" class=\"wp-image-12715\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/12\/messsystem_schallleistung_referenzschallquelle_vergleichsschallquelle_reference_noise_source-300x300.jpg\" alt=\"Measuring system for sound power\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/12\/messsystem_schallleistung_referenzschallquelle_vergleichsschallquelle_reference_noise_source-300x300.jpg 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/12\/messsystem_schallleistung_referenzschallquelle_vergleichsschallquelle_reference_noise_source-640x640.jpg 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/12\/messsystem_schallleistung_referenzschallquelle_vergleichsschallquelle_reference_noise_source-150x150.jpg 150w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/12\/messsystem_schallleistung_referenzschallquelle_vergleichsschallquelle_reference_noise_source-768x768.jpg 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/12\/messsystem_schallleistung_referenzschallquelle_vergleichsschallquelle_reference_noise_source-297x297.jpg 297w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/12\/messsystem_schallleistung_referenzschallquelle_vergleichsschallquelle_reference_noise_source-75x75.jpg 75w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/12\/messsystem_schallleistung_referenzschallquelle_vergleichsschallquelle_reference_noise_source.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12715\" class=\"wp-caption-text\">Reference noise source (comparative sound source) incl. amplifier according to DIN EN ISO 6926<\/p><\/div>\n<div id=\"attachment_12454\" style=\"width: 210px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_soundbook_data_acquisition_unit2_ws.png\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12454\" class=\"wp-image-12454\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_soundbook_data_acquisition_unit2_ws.png\" alt=\"Multi-channel multi-purpose measuring system for sound power\" width=\"200\" height=\"244\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_soundbook_data_acquisition_unit2_ws.png 396w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_soundbook_data_acquisition_unit2_ws-300x366.png 300w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/a><p id=\"caption-attachment-12454\" class=\"wp-caption-text\">Data acquisition unit Soundbook MK2<\/p><\/div>\n<div id=\"attachment_12462\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_soundbook_mk2_expander_data_acquisition_unit_ws.png\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12462\" class=\"wp-image-12462 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_soundbook_mk2_expander_data_acquisition_unit_ws-300x257.png\" alt=\"Multi-channel multi-purpose measuring system for sound power\" width=\"300\" height=\"257\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_soundbook_mk2_expander_data_acquisition_unit_ws-300x257.png 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_soundbook_mk2_expander_data_acquisition_unit_ws-640x549.png 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_soundbook_mk2_expander_data_acquisition_unit_ws-768x658.png 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_soundbook_mk2_expander_data_acquisition_unit_ws.png 770w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12462\" class=\"wp-caption-text\">Data acquisition unit Soundbook MK2 with channel extension by means of Soundbook MK2 Expander<\/p><\/div>\n<div id=\"attachment_12519\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_datenakquisitionseinheit_expander_usb_data_acquisition_unit_ws.png\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12519\" class=\"wp-image-12519 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_datenakquisitionseinheit_expander_usb_data_acquisition_unit_ws-300x50.png\" alt=\"Multi-channel multi-purpose measuring system for sound power\" width=\"300\" height=\"50\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_datenakquisitionseinheit_expander_usb_data_acquisition_unit_ws-300x50.png 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_datenakquisitionseinheit_expander_usb_data_acquisition_unit_ws-640x106.png 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_datenakquisitionseinheit_expander_usb_data_acquisition_unit_ws.png 751w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12519\" class=\"wp-caption-text\">Data acquisition unit Soundbook MK2 Expander with USB cable<\/p><\/div>\n<div id=\"attachment_12520\" style=\"width: 210px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_datenakquisitionseinheit_soundbook_mk2_expander_data_acquisition_unit2_ws.png\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12520\" class=\"wp-image-12520\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_datenakquisitionseinheit_soundbook_mk2_expander_data_acquisition_unit2_ws-300x363.png\" alt=\"Multi-channel multi-purpose measuring system for sound power\" width=\"200\" height=\"242\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_datenakquisitionseinheit_soundbook_mk2_expander_data_acquisition_unit2_ws-300x363.png 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_datenakquisitionseinheit_soundbook_mk2_expander_data_acquisition_unit2_ws.png 640w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/a><p id=\"caption-attachment-12520\" class=\"wp-caption-text\">Synchronisation of up to 4 Soundbook MK2 Expander with each other as well as with Soundbook MK2 via HUB<\/p><\/div>\n<div id=\"attachment_12460\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_apollo_lt_data_acquisition_unit_ws.png\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12460\" class=\"wp-image-12460 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_apollo_lt_data_acquisition_unit_ws-300x131.png\" alt=\"Multi-channel multi-purpose measuring system for sound power\" width=\"300\" height=\"131\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_apollo_lt_data_acquisition_unit_ws-300x131.png 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_apollo_lt_data_acquisition_unit_ws-640x280.png 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_apollo_lt_data_acquisition_unit_ws.png 686w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12460\" class=\"wp-caption-text\">Various modules of data acquisition unit Apollo lt<\/p><\/div>\n<div id=\"attachment_12455\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_apollo_carrier_data_acquisition_unit_ws.png\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12455\" class=\"wp-image-12455 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_apollo_carrier_data_acquisition_unit_ws-300x151.png\" alt=\"Multi-channel multi-purpose measuring system for sound power\" width=\"300\" height=\"151\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_apollo_carrier_data_acquisition_unit_ws-300x151.png 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_apollo_carrier_data_acquisition_unit_ws-640x321.png 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_datenakquisitionseinheit_apollo_carrier_data_acquisition_unit_ws.png 695w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12455\" class=\"wp-caption-text\">Carrier for synchronization of variety of modules of data acquisition unit Apollo lt<\/p><\/div>\n<div id=\"attachment_12453\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_analysesoftware_samurai_acoustics_bundle_ws.jpg\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12453\" class=\"wp-image-12453 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_analysesoftware_samurai_acoustics_bundle_ws-300x241.jpg\" alt=\"Performance and evaluation of acoustic measurements\" width=\"300\" height=\"241\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_analysesoftware_samurai_acoustics_bundle_ws-300x241.jpg 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_analysesoftware_samurai_acoustics_bundle_ws-640x514.jpg 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_analysesoftware_samurai_acoustics_bundle_ws-768x616.jpg 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_analysesoftware_samurai_acoustics_bundle_ws.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12453\" class=\"wp-caption-text\">Analysis software Samurai, Acoustic Bundle with module Sound level meter, module Octave and third octave band filter as well as module Reverberation time<\/p><\/div>\n<div id=\"attachment_12507\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_analysesoftware_samurai_sound_level_meter_ws.jpg\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12507\" class=\"wp-image-12507 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_analysesoftware_samurai_sound_level_meter_ws-300x243.jpg\" alt=\"Performance and evaluation of acoustic measurements\" width=\"300\" height=\"243\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_analysesoftware_samurai_sound_level_meter_ws-300x243.jpg 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_analysesoftware_samurai_sound_level_meter_ws-640x519.jpg 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_analysesoftware_samurai_sound_level_meter_ws-768x623.jpg 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_raumakustik_bauakustik_analysesoftware_samurai_sound_level_meter_ws.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12507\" class=\"wp-caption-text\">Analysis software Samurai, module Sound level meter<\/p><\/div>\n<div id=\"attachment_12522\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_fractional_octaves_ws.jpg\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12522\" class=\"wp-image-12522 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_fractional_octaves_ws-300x233.jpg\" alt=\"Performance and evaluation of acoustic measurements\" width=\"300\" height=\"233\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_fractional_octaves_ws-300x233.jpg 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_fractional_octaves_ws-640x497.jpg 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_fractional_octaves_ws-768x596.jpg 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_fractional_octaves_ws.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12522\" class=\"wp-caption-text\">Analysis software Samurai, module Fractional octaves<\/p><\/div>\n<div id=\"attachment_12523\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_intensity_1_ws.jpg\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12523\" class=\"wp-image-12523 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_intensity_1_ws-300x234.jpg\" alt=\"Performance and evaluation of acoustic measurements\" width=\"300\" height=\"234\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_intensity_1_ws-300x234.jpg 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_intensity_1_ws-640x498.jpg 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_intensity_1_ws-768x598.jpg 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_intensity_1_ws.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12523\" class=\"wp-caption-text\">Analysis software Samurai, module Sound intensity<\/p><\/div>\n<div id=\"attachment_12524\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_power_ws.jpg\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12524\" class=\"wp-image-12524 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_power_ws-300x234.jpg\" alt=\"Performance and evaluation of acoustic measurements\" width=\"300\" height=\"234\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_power_ws-300x234.jpg 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_power_ws-640x499.jpg 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_power_ws-768x598.jpg 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_power_ws.jpg 770w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12524\" class=\"wp-caption-text\">Analysis software Samurai, module Sound power for determining the sound power by measuring the sound pressure level<\/p><\/div>\n<div id=\"attachment_12525\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_intensity_2_ws.jpg\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12525\" class=\"wp-image-12525 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_intensity_2_ws-300x242.jpg\" alt=\"Performance and evaluation of acoustiic measurements\" width=\"300\" height=\"242\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_intensity_2_ws-300x242.jpg 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_intensity_2_ws-640x517.jpg 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_intensity_2_ws-768x620.jpg 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_sound_intensity_2_ws.jpg 786w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12525\" class=\"wp-caption-text\">Analysis software Samurai, module Sound power for determining the sound power by measuring the sound intensity level<\/p><\/div>\n<div id=\"attachment_12526\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_intensity_map_ws.jpg\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12526\" class=\"wp-image-12526 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_intensity_map_ws-300x246.jpg\" alt=\"Performance and evaluation of acoustic measurements\" width=\"300\" height=\"246\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_intensity_map_ws-300x246.jpg 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_intensity_map_ws-640x524.jpg 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_intensity_map_ws-768x629.jpg 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_intensity_map_ws.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12526\" class=\"wp-caption-text\">Analysis software Samurai, module Sound field mapping for generation of color mappings of sound intensity (scanning method)<\/p><\/div>\n<div id=\"attachment_12527\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_synchronous_fft_ws.jpg\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12527\" class=\"wp-image-12527 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_synchronous_fft_ws-300x200.jpg\" alt=\"Performance and evaluation of acoustic measurements\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_synchronous_fft_ws-300x200.jpg 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_synchronous_fft_ws-640x426.jpg 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_synchronous_fft_ws-768x512.jpg 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_synchronous_fft_ws.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12527\" class=\"wp-caption-text\">Analysis software Samurai, module Synchronous FFT for determining vibration or sound spectra of rotating units at high background noise level<\/p><\/div>\n<p><div id=\"attachment_12528\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_virtual_tacho_fan_order_ws.jpg\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12528\" class=\"wp-image-12528 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_virtual_tacho_fan_order_ws-300x212.jpg\" alt=\"Performance and evaluation of acoustic measurements\" width=\"300\" height=\"212\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_virtual_tacho_fan_order_ws-300x212.jpg 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_virtual_tacho_fan_order_ws-640x451.jpg 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_virtual_tacho_fan_order_ws-768x541.jpg 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2025\/06\/messsystem_schallleistung_analysesoftware_samurai_virtual_tacho_fan_order_ws.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12528\" class=\"wp-caption-text\">Analysis software Samurai, module Virtual tachometer fordetermination of rotational speed and order analysis of rotating parts using the narrow-band spectrum of a sensor<\/p><\/div><\/p>","protected":false},"excerpt":{"rendered":"<p><\/br>We offer the configuration and delivery of modular, multi-purpose acoustic and vibration measurement systems for your specific requirements.<\/p>\n<p>This includes multi-channel measuring systems for the  <strong>simple<\/strong> and <strong>effective<\/strong> performance and analysis of sound power measurements at plants, machinery and devices \u2013 both <strong>in the field<\/strong> and <strong>in the laboratory<\/strong>.<\/p>\n","protected":false},"author":2,"featured_media":12571,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[351,745,100,104,105,106,108,753,754,99,749,744,137,47,98,752,96,91,755,480],"class_list":["post-12512","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-messgerate","tag-analysesoftware","tag-datenakquisitionseinheit","tag-din-en-iso-3740","tag-din-en-iso-3744","tag-din-en-iso-3745","tag-din-en-iso-3746","tag-din-en-iso-9614","tag-din-en-iso-9614-1","tag-din-en-iso-9614-2","tag-hullflache","tag-kalibrierung","tag-messmikrofon","tag-messsystem","tag-messung","tag-schallintensitat","tag-schallintensitaetspegel","tag-schallleistung","tag-schallleistungspegel","tag-schallpegelmesser","tag-schulung","has-content-parts","content-parts-5"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - 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