I’m running Volumio 2.031 on a Raspberry Pi 3. I’m using the I2S signals from the Pi’s GPIO to an outboard DAC.
This DAC is based on an SRC4192 up sampling chip followed by a PCM1794 DAC.
When the track is paused I am getting a constant low level clicking noise from the DAC. This goes away when I resume playback.
Has anyone else experienced this behaviour?
Yes, disable the on-board WiFi on the pi3. That is unless you’re using it.
The WiFi is off. That’s not the issue - has to be something else?
Hi.
I Have the same behaviour, I set up generic I2S device and use SRC4194(24bits I2S on input and output) and PCM1792 DAC’s. I am preety sure that reason is pause - then volumio goes into I2S sleep?? shitty sample rate? When track is played then everything working fine even there are break in to the track.
When I manually switch to next track is the same when it is made automaticly- everything is fine
Any body solve this problem or maybe has an idea what to do?
Best Regards
Its a bit of an old thread but I am trying anyway 
I do have the same problem with my setup. I am running a SRC4192 reclocker module (metronome) from Twisted Pear Audio. That is passed on to a PCM1794a DAC (COD DAC) also from Twisted pear audio. I am using a RPI 3 with a Isolator Pi.
I have tried with different drivers and still the same. I do believe this is a hardware problem with the SRC4192. I found this thread on the TI community where there is the following answer:
Here is the link: https://e2e.ti.com/support/audio/f/6/t/635342?SRC4192-Input-Clock-Halting-with-Master-Mode-for-Output-Port
I have also started a thread on the MoOde forum: http://moodeaudio.org/forum/showthread.php?tid=438&pid=3474
and one on Twisted Pear Audio Forum but no answer there: http://www.twistedpearaudio.com/forum/posts/t4101-Loud-ticking-noise-when-music-is-paused-shift-song
A solution could be to build a script the pull’s a GPIO pin high/low connected to the mute pin on the DAC when the music is paused
If anyone have a clue on how to build this script you are more than welcome to post a reply Any help is much appreciated
Its a bit of an old thread but I am trying anyway
I do have the same problem with my setup. I am running a SRC4192 reclocker module (metronome) from Twisted Pear Audio. That is passed on to a PCM1794a DAC (COD DAC) also from Twisted pear audio. I am using a RPI 3 with a Isolator Pi.
I have tried with different drivers and still the same. I do believe this is a hardware problem with the SRC4192. I found this thread on the TI community where there is the following answer:
Here is the link: https://e2e.ti.com/support/audio/f/6/t/635342?SRC4192-Input-Clock-Halting-with-Master-Mode-for-Output-Port
I have also started a thread on the MoOde forum: http://moodeaudio.org/forum/showthread.php?tid=438&pid=3474
and one on Twisted Pear Audio Forum but no answer there: http://www.twistedpearaudio.com/forum/posts/t4101-Loud-ticking-noise-when-music-is-paused-shift-song
A solution could be to build a script the pull’s a GPIO pin high/low connected to the mute pin on the DAC when the music is paused
If anyone have a clue on how to build this script you are more than welcome to post a reply Any help is much appreciated
A plugin could be the perfect solution, you can take inspiration from the gpio control plugin
I recall seeing a PR for Ampswitch that does something similar albeit designed only for a small delay.
github.com/volumio/volumio-plugins/pull/256
Thanks guys! This was very helpful.
I used the plugin Amp Switch and set up to pull when the music is paused. Right now I am using a relay since I have an I2S IsolatorPi and therefore no shared ground with the DAC. Next is to make a work around so I can ditch the relay A MOSFET module from ebay could be a good solution: https://www.aliexpress.com/store/product/LR7843-MOS-MODULE-MOSFET-control-Module-Field-effect-MODULE/1185416_32827499840.html?spm=2114.search0204.3.148.2537bf17OwLXmQ&ws_ab_test=searchweb0_0,searchweb201602_5_10065_10068_10059_10884_10887_10696_100031_10084_10083_10103_10618_10304_10307_10820_10821_10302,searchweb201603_1,ppcSwitch_2_ppcChannel&algo_expid=2780bee9-a775-4542-8768-74cfd7c63fb8-21&algo_pvid=2780bee9-a775-4542-8768-74cfd7c63fb8&priceBeautifyAB=0