3.6. Measured Parameters
3.6.1.
Sensitivity
SPL is expressed in dB rel 20µPa, computed according to IEC 268-5.
Measurement set up and parameters according chapter 3.4.
This test is performed for 100% of products in the production line.
3.6.2.
Frequency response
Frequency response is measured according test set up in chapter 3.4 data sheet and checked against
the tolerance window defined in chapter 3.1. This Test is performed for 100% of products in the
production line.
3.6.3.
Total harmonic distortion (THD)
Is measured according IEC 268-5 (2nd to 5th harmonics) and test set up in chapter 3.4. This test is
performed for 100% of products in the production line.
3.6.4.
Rub& Buzz
Rub & Buzz will be measured in the Inline-measuring device with a sinusoidal sweep. Rub & Buzz is
defined as the maximum level of no harmonic energy, expressed as signal to non-harmonic content
ratio, in a certain frequency-range. Signal and evaluation criteria are according to chapter 3.2. This test
is performed for 100% of products in the production line.
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