At Sun, 7 Jun 2009 23:43:04 +0200, Alan Alan wrote: > > Hi Wei ! > > I made the tests changig the values in the sound/pci/hda/patch_nvhdmi.c file > manually. > To summarize the results i have perfect sound up to 192khz/32bits(S32_LE > format). But only one configuration at a time. > > How can we set multiple formats here, or let the system pass all formats to > the av receiver ? > > Here are the detailed results i tested. > > In the source code > .rates = SNDRV_PCM_RATE_A > .maxbps = B, > .formats = SNDRV_PCM_FMTBIT_SC_LE, Change like .rates = SNDRV_PCM_RATE_A | SNDRV_PCM_RATE_B | ..., .maxbps = 24, .formats = SNDRV_PCM_FMTBIT_A | SNDRV_PCM_FMTBIT_B | ..., > 1. A=192000, B=24, C=16, perfect sound, with speaker-test -Dhdmi -c6 > -r192000 -FS16_LE, no other setting working > 2. A= 192000, B=24, C=32, perfect sound, with speaker-test -Dhdmi -c6 > -r192000 -FS32_LE, no other setting working > 3. A= 96000, B=24, C=32, perfect sound, with speaker-test -Dhdmi -c6 > -r96000 -FS32_LE, no other setting working > 4. A=192000, B=24, C=24, strange high pitched sound from all speakers, > with speaker-test -Dhdmi -c6 -r192000 -FS24_LE, no other settings working > 5. A= 96000, B=24, C=24, strange high pitched sound from all speakers, > with speaker-test -Dhdmi -c6 -r96000 -FS24_LE, no other settings working S24_LE is no format for HD-audio. It's 24bit packed in lower 3 bytes of 4 byte frame. For 24bit format, use S32_LE. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
