SigmaStudio Compressor Issue
Hello
I am test compressor function of the ADAU1761 that have discovered an issue. If setting RMSTC 10 ms and Decay 10 ms , then 20 Hz signal will some distortion as follow as the IMG_0517. If setting RMSTC 10 ms and Decay 70 ms , then 20 Hz signal will not any distortion as follow as the IMG_0518. But my application Decay need setting 10 ms. Could you tell me how to solve this issue , please ? Thank you.
Audio Signal Processors
SigmaDSP Audio Processors
adau1761
Hello
Could you give me any to recommend , please? Thank you.
-Paul
Hello Paul,
The RMS compressors for the ADAU1761 use a running average in order to approximate the RMS level of the signal. Due to the way this works, the decay time must be greater than the time constant. Otherwise, the signal will distort because the decay and the attack will overlap. So, the solution to the problem is to make the RMS time constant faster (shorter time), or to make the decay slower (longer time).
I apologize that this limitation is not clearly defined in the documentation.
Hi BrettG
Thank you for your help. I will change my setting. Thank you.
--Paul
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