Technical acoustics and vibration control technology are concerned with the physical origins of sound and vibrations, and their propagation in air and solid structures.
One image-making method involves localizing a sound source by using a microphone array. Here the sound-radiating surface of the test object is "scanned" (a technique called beam-forming) and the measurement values are color-coded and superimposed on a live video image. In this way the PAK software allows time-varying noise emissions to be visualized graphically.
A key variable of the source strength of a sound creator is the sound power. The PAK software supports the user by correctly determining the sound power in accordance with DIN EN ISO 3740 ff. in anechoic or semi-anechoic rooms (envelope method). It is also possible to identify the sound power in a reverberation test chamber using a known reverberation time, or to determine it by comparing it to a reference sound source with a known sound power (comparative method).
If a special test chamber is not available, the sound power can also be determined by measuring the sound intensity. The PAK software supports the use of different probes (pressure/pressure and pressure/particle velocity) and continuously checks all the principal sound field indicators. In addition, the emission behavior of the test object is also graphically visualized (sound field mapping).