> > Why is the sample rate set to 48000? > No idea! The sourcing of the file is outside of my hands..
On Fri, Aug 27, 2021 at 4:14 PM guest271314 <guest271...@gmail.com> wrote: > Why is the sample rate set to 48000? > > On Fri, Aug 27, 2021 at 6:40 AM mindfsck <mindf...@gmail.com> wrote: > >> Thanks Sean. I unloaded the suspend module but the plop is still there. >> I don't really think it is HW related since the file plays just fine with >> paplay and aplay. >> >> On Fri, Aug 27, 2021 at 5:49 AM Sean Greenslade <s...@seangreenslade.com> >> wrote: >> >>> On Thu, Aug 26, 2021 at 09:43:23PM +0200, mindfsck wrote: >>> > Hi there, >>> > >>> > I was using this example to simply play a WAV file without having much >>> clue >>> > of audio: >>> > >>> https://www.freedesktop.org/software/pulseaudio/doxygen/pacat-simple_8c-example.html >>> > I changed the sources to match (IMHO) my settings, i.e. channels=1 and >>> > rate=48000. >>> > >>> > I have two wavefiles, the first plays as it should (compared with >>> command >>> > line paplay or aplay) and the second one has an audible PLOP (but only >>> > around 90% of the time) at the very beginning of playback: >>> > >>> > (1 - OK) >>> > General >>> > Complete name : out_clean.wav >>> > Format : Wave >>> > File size : 81.3 KiB >>> > Duration : 866 ms >>> > Overall bit rate mode : Constant >>> > Overall bit rate : 769 kb/s >>> > Audio >>> > Format : PCM >>> > Format settings : Little / Signed >>> > Codec ID : 1 >>> > Duration : 866 ms >>> > Bit rate mode : Constant >>> > Bit rate : 768 kb/s >>> > Channel(s) : 1 channel >>> > Sampling rate : 48.0 kHz >>> > Bit depth : 16 bits >>> > Stream size : 81.2 KiB (100%) >>> > >>> > (2 - NOK) >>> > General >>> > Complete name : out_short_clean.wav >>> > Format : Wave >>> > File size : 22.8 KiB >>> > Duration : 242 ms >>> > Overall bit rate mode : Constant >>> > Overall bit rate : 772 kb/s >>> > Audio >>> > Format : PCM >>> > Format settings : Little / Signed >>> > Codec ID : 1 >>> > Duration : 242 ms >>> > Bit rate mode : Constant >>> > Bit rate : 768 kb/s >>> > Channel(s) : 1 channel >>> > Sampling rate : 48.0 kHz >>> > Bit depth : 16 bits >>> > Stream size : 22.8 KiB (100%) >>> > >>> > I tried using different BUFSIZE and my systemload is also not an >>> issue... >>> > Any ideas? >>> >>> I've experienced something like this with a few built-in audio cards on >>> various laptops. It's never bothered me enough to track it down, but I >>> suspect it's due to the suspending and resuming of cards. Can you try >>> disabling the autosuspend module and see if it still happens? Use this >>> command to temporarily disable it until the next time pulse reloads: >>> >>> $ pactl unload-module module-suspend-on-idle >>> >>> --Sean >>> >>>
