In the EN50332 standard, an artificial artificial head (HATS) with standard test ears is used for testing in a standard acoustic laboratory. The test signal has strict regulations and must be in accordance with the standard IEC60268-1. Corresponding to different playback equipment, the test signal should be based on The corresponding test recording level specified in the standard shall be produced; during the test, the noise reduction system of the test equipment must be turned off, the volume shall be adjusted to the maximum, and the tone shall be adjusted to the position where the headphones reach the maximum sound pressure; the test will be repeated five times, and the maximum sound The test results of the voltage level will be the average value; for a simple playback device without headphones, the maximum output voltage needs to be measured and evaluated.
