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Problem: RPi 4b connected via I2S to SABRE ES9038Q2M DAC POPs at manual Track Change
#4
This particular issue "audio glitch on stop/start" has been around for years and I think a couple of players for example Squeezelight have a workaround option to always keep the audio output open but this prevents other applications from using it.

In moOde for example such an option in MPD would prevent the other audio renderers including Bluetooth, Airplay, Spotify from working. IIRC the MPD maintainer also holds that audio players should release the output when they are not playing to allow other applications to use it.

The automute feature in certain ESS DAC chips is programmable and works based on signal level and time. Allo's new Revolution DAC for example offers this as a user configurable option (see below). IIRC their Katana DAC uses it at a default setting but doesn't expose it as a user configurable setting. I've never had any MPD audio glitches on my Katana and same with the Revolution DAC that I'm starting to test.

Revolution DAC
POPMUTE: to eliminate the POP/clicks on PCM stop/start/sample rate change . Mute duration can be customized.
0 – disabled, 1-5 is 20-100msec. (default 3)
Enjoy the Music!
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RE: RPi 4b connected via I2S to SABRE ES9038Q2M DAC POPs at manual Track Change - by Tim Curtis - 07-18-2020, 01:24 PM

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