QC Unique Feature - Noise Microphone Detects Environment Noise
Audio products are tested under controlled conditions during the research and development phase without significant external disruptions. However, End-of-Line testing is done in a production environment that involves various noises and vibrations including those from machines, alarms and goods trucks which can create unpredictable acoustic interference that may be of the same magnitude as the symptoms of defects. At times, short-term or impulsive disruptions can be generated and easily reach 100dB SPL which can significantly affect the accuracy of acoustic testing, leading to false rejects.

To mitigate production noise, various strategies can be employed. A passive solution is to use a test box that isolates noise and vibration in the workshop. A well-designed test box can attenuate disturbances up to 40dB, which is enough for amplitude frequency response and in most cases for THD, but not sufficient for impulsive distortion such as Rub&Buzz.

» Read more to learn how to mitigate impulsive distortion such as Rub & Buzz in a production environment during End-of-Line testing.

Check out the tutorial on In-Situ Room Compensation (ISC) and learn more about our anechoic room solution for measuring any loudspeaker in any room under standard conditions. Say goodbye to nagging questions "Where should I measure my speaker?" and turn your office into a perfect free field.

Watch the video now and discover the possibilities with the In-Situ Room Compensation module for your test laboratory.