TerryS wrote: > I actually saw this with the last release, but waited to verify that it > was still an issue on the latest, and it is. > I am using hdmi for audio playback and it plays perfectly for a period > of time, then suddenly becomes very noisy with a buzzing or machine-gun > noise. The period of time it takes for this to happen is very > predictable. When I am playing 44.1khz flac files, it will play for > just about 50 minutes before it starts the buzzing. If I play 96kHz > flac, it plays about 23 minutes. Notice that 50 x 44k/96k = 23 minutes. > It is almost like it plays a certain number of samples before it freaks > out. > Once it starts buzzing, it will continue buzzing, even if I stop the > song and start it again. > A number of things will stop the buzzing and "reset the clock" so that > it is fine for another 50 or 23 minutes: > Rebooting the Wandboard. > Restarting the Squeezelite process. > Switching the sample rate; switching from playing an album at 96k to one > at 44.1k or vice-versa. > Or maybe strangest of all... unplugging and re-plugging the hdmi cable. > Or I can just switch inputs on the sound bar to a different input and > back again. > > This happens when using my Yamaha YSP-3000 sound bar which supports all > of the audio sample rates. Just to be sure it wasn't something weird > with the sound bar, I also tried it direct into my Panasonic HDTV. It > doesn't support 96k bit rates, but at 44.1k it acted the same as the > sound bar. > > I have tried some different ALSA settings (although certainly not all): > OPTIONS="-n SqueezeliteWAND -m 00:1f:7b:b2:02:85 -a 40::16: -o > hw:CARD=imxhdmisoc -d all=debug -f > /var/log/squeezelite/squeezelite.log" > Nothing seemed to make a difference. > Since the size of the log file at the time that it starts buzzing is the > same if playing 96k or 44.1k files (about 194KiB), I also tried turning > off the logging, but that didn't matter either. I don't see anything > wrong in the squeezelite log. It just seems to merrily play along, > blissfully unaware that the music isn't right anymore. > > I don't know what to make of this. Obviously if I am the only one > interested in playing through hdmi at the moment, don't let this > interfere with the other work going on. I have no pressing need to get > this working right away, I am mainly trying to contribute to the > testing. > > My setup: > I am running the wandboard headless. I plug the hdmi into my sound bar. > The audio plays through the sound bar, and the login screen is seen on > the TV. I shut off the TV to keep from burning in the image, although I > have left it on and it doesn't affect the problem. > I am running wireless, although I also tried it through the wired > ethernet with no change. > I only play flac files. 96kHz/24 bit or 44.1kHz/16 bit. > > edit: I am only running squeezelite, not the LMS server or Jivelite on > the wandboard. > edit 2: The sound bar displays the correct sample rate (96k PCM or > 44.1k PCM) before and after it starts buzzing. > > I've done extensive web searching and don't see anything quite like this > being reported. I do see some vaguely similar issues with pulseaudio, > and have accumulated a number of pages with possible fixes that I will > look at more this weekend. Is pulseaudio even active? I don't see any > signs of it. > > > Terry
The two buffers in squeezelite are much less than 23 minutes worth... You could vary their size (-b option) to see if this impacts it though. 44.1k at 8 bytes per sample is around a Giga byte from my simple maths after 50 minutes? Does "turning off" the player from a squeezebox control application help? This will close the alsa port and reopen it from within squeezelite. ------------------------------------------------------------------------ Triode's Profile: http://forums.slimdevices.com/member.php?userid=17 View this thread: http://forums.slimdevices.com/showthread.php?t=98190 _______________________________________________ unix mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/unix
