Hallo everyone,
I am really exited and appreciate more and more runeteam's work as I get deeper into your code. Soundquality is just superb and UI is really comfortable.
By progressing in my musicbox project I got a little thing that I wasn't able to fix...
-> A clearly hearable but not loud pop when changing or starting tracks.
I tired with all constelations of...
- newest rune UI
- class-T and class AB amp
- different stabilized powersupplies as well as batteries
- Raspberry B+ and 2
- Raspyplay4 and HifiberryDAC+
- ground coupling and deearthing
In all setups its almost the same on the speakers. A not lound but clearly hearable "tack-tack" sound similar to that when connecting jacks.
Therefore I tested to interconnect several ground point from pi 5 V to DAC and AMP to earth and so on, but this had no noticable impact.
I guess the symptoms would be avoidable by getting the mpd to keep the music bitstream open and stream zeros or something like that (because I use 5 seconds of crossfade and there is just nothing hearable). But I don't know how to try this nor it could be done anyhow.
- Potential Problem? But where?
-> So: can anyone confirm same noise in his setup or found a way to fix it?
Attached you will find two measurements on my amp's output at 0 hw volume (1) and the other while playing music at a not so loud volume (2).
Greets Stef