The perceived sound radiating from a machine or a vehicle is often associated with its perfect and reliable functionality. So, for instance, a car or a motorcycle of a certain type has to produce a certain sound that on the one hand signalizes the user the product`s unique functionality and on the other hand marks the product as clearly superior to those of other manufacturers.
Similarly, for example, a vacuum cleaner is supposed to cause a specific cleaning sound and a minimum sound volume the user associates with the device`s necessary suction power. When furnishing cruise liners or yachts with high-quality but very light materials, such factors also play an important roll.
To engineer the device to produce the “right” sound is often a very complex problem that cannot be described using objective criteria alone. Here again, the company can help you by applying psychoacoustic techniques and sound design.
Thereby both objective parameters (e.g. sound pressure level spectra) and subjective criteria (e.g. loudness according to DIN 45613 (Zwicker), roughness, sharpness) are applied to characterize a specific sound.