Bonjour, Well, I can obtain, with pulseaudio, what I need : I just have to set emu card at 48000 but it's not a good thing because when using alsa directly or jack, I need to reset at 44100 in alsamixer ; it would be nice to just set once sample rate at 44100. I don't understand exactly what to ask at alsa developer because I don't really want alsa doing what pulseaudio want ; it seems better that pulseaudio detect the correct sample rate of the card and then open the session at right sample rate, isn't it ? I can't study what makes the difference because I'm not a programer. cordialement, Le 28/04/2012 14:28, Tanu Kaskinen a ?crit : > On Sat, 2012-04-28 at 13:10 +0200, moebius wrote: >> Bonjour, >> I've tried to post in the list but my message doesn't appear ; perhaps >> there's a problem with the attached fille....so I post directly to you, >> sorry for the inconvenient > > Yes, the largish attachment may have caused your message to go to the > moderation queue. > >> Bonjour, >> >> Thank for your answer. >> >> In fact, after changing samplerate in alsamixer and test immediat >> result, I've reseted pulseaudio and test for changes again with no success. >> Now, after your mail and before testing, I've copied daemon.conf in >> ~./pulse/ and decomment and modify the sample rate line : >> >> ; default-sample-format = s16le >> default-sample-rate = 44100 >> ; default-sample-channels = 2 >> >> here are my soundcards ;the ensonic one is just here for driving midi >> devices ; for audio, I use the EMU one : >> >> cat /proc/asound/cards >> 0 [AudioPCI ]: ENS1371 - Ensoniq AudioPCI >> Ensoniq AudioPCI ENS1371 at 0xd880, irq 16 >> 1 [EMU0404 ]: Audigy2 - E-mu 0404b PCI [MAEM8852] >> E-mu 0404b PCI [MAEM8852] (rev.0, >> serial:0x40021102) at 0xdc00, irq 19 >> >> NB : the motherboard soundcard is disabled. >> >> I join the pulse log >> It contains this strange line : >> >> ( 0.064| 0.000) I: [pulseaudio] alsa-util.c: Device surround41:1 >> doesn't support 44100 Hz, changed to 48000 Hz. > > This explains why you have to set the internal rate to 48000 when using > PulseAudio. If Jack and aplay can open the device in the 44100 mode, I > don't know why PulseAudio fails to do that. Presumably the device > opening sequence is done a bit differently in PulseAudio than e.g. in > aplay (I think the setup function calls can be called with different > order, and some Alsa drivers behave differently depending on the order). > So if you have the motivation, you could study what makes the > difference. > > You could also ask on the alsa-devel mailing list if the driver > maintainer could improve the driver so that it would set the internal > rate automatically correctly when the device is opened. So if PulseAudio > opens the device in the 48000 mode, then the driver should set the > internal rate automatically to 48000 Hz. >
