On May 16, 2013, at 11:27 AM, J. Ian Johnson wrote: > It was 44.1K, but now that I try to reproduce it today (previously had > headphones plugged in), it plays no sound at all. > I noticed that diagnose-sound-playing does not restore host-api to what it > was before the call.
Grr… Mac OS X has 99 problems, but reliable sound-playing ain't one. I'm not entirely surprised to hear this, although I'm more familiar with the problem on Windows. Per your suggestion, I've changed the parameter mutation to a parameterize… not that that would affect your problem at all. For reference, can you play a sound with 'aplay' (iirc, that's the built-in ALSA player) ? If you're looking for a sound, you might choose rsound's ./contrib/drum-samples/crash-cymbal.wav . Thanks again for your help with what I'm sure was just supposed to be a 30-second project. John > -Ian > ----- Original Message ----- > From: "John Clements" <[email protected]> > To: "J. Ian Johnson" <[email protected]> > Cc: "users" <[email protected]> > Sent: Thursday, May 16, 2013 2:18:48 PM GMT -05:00 US/Canada Eastern > Subject: Re: [racket] RSound in ubuntu only works with diagnose-sound-playing > - can't choose library? > > > On May 15, 2013, at 5:18 PM, J. Ian Johnson wrote: > >> Mostly towards John Clements: >> >> I thought I'd take a look at RSound to make a little "do X for 30 seconds >> *beep* wait 10 seconds *beep* [repeat]" program. Trying (play ding) gets me >> the stuff before the "found 2 host APIs" with no sound. Running >> diagnose-sound-playing gets me a beep after the "trying api paALSA" but >> nothing afterwards. There isn't any documentation for setting the API to >> just use paALSA, so... what might be going on here? I'm running xfce 4.10 - >> xubuntu 12.10 64 bit. > > You're right, there's an undocumented function for setting the api, and also > for querying the set of all available APIs. > > I've added documentation for that, but not pushed it yet. > > In the meantime, you can choose the host API explicitly, using > > (host-api 'paALSA) > > I don't personally expect this to solve your problem, given what you've said, > but I'm curious: did the beep you heard occur when trying to play at 44.1K, > or at 48K? > > Thanks for your help! > > John > >> >> I have all the pulseaudio modules that aptitude listed. >> >> ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear >> ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe >> ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side >> ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) >> BT_GET_CAPABILITIES failed : Input/output error(5) >> ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) >> BT_GET_CAPABILITIES failed : Input/output error(5) >> ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) >> BT_GET_CAPABILITIES failed : Input/output error(5) >> ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) >> BT_GET_CAPABILITIES failed : Input/output error(5) >> ALSA lib pcm_dmix.c:957:(snd_pcm_dmix_open) The dmix plugin supports only >> playback stream >> Cannot connect to server socket err = No such file or directory >> Cannot connect to server request channel >> jack server is not running or cannot be started >> Fontconfig warning: "/etc/fonts/conf.d/50-user.conf", line 9: reading >> configurations from ~/.fonts.conf is deprecated. >> found 2 host API(s): (paALSA paOSS) >> trying each one in turn. >> trying api paALSA: >> trying to play at sample rate 44100.0: >> ...finished. >> trying to play at sample rate 48000.0: >> Expression 'ret' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 1670 >> Expression 'AlsaOpen( &alsaApi->baseHostApiRep, params, streamDir, >> &self->pcm )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 1830 >> Expression 'PaAlsaStreamComponent_Initialize( &self->playback, alsaApi, >> outParams, StreamDirection_Out, NULL != callback )' failed in >> 'src/hostapi/alsa/pa_linux_alsa.c', line: 2096 >> Expression 'PaAlsaStream_Initialize( stream, alsaHostApi, inputParameters, >> outputParameters, sampleRate, framesPerBuffer, callback, streamFlags, >> userData )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 2764 >> playing sound failed with message: "pa-open-stream: Device unavailable" >> trying api paOSS: >> trying to play at sample rate 44100.0: >> playing sound failed with message: "stream-choose: no devices available in >> current API paOSS with 100.0ms latency or less." >> trying to play at sample rate 48000.0: >> playing sound failed with message: "stream-choose: no devices available in >> current API paOSS with 100.0ms latency or less." >> If playback at 44100.0 failed and playback at another sample rate >> succeeded using Windows 7, you probably need to manually set the >> sample rate of that playback device to 44100 Hz, by right-clicking >> on the volume icon and then digging through menus (properties, advanced). >> >> -Ian >> ____________________ >> Racket Users list: >> http://lists.racket-lang.org/users > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
