Takashi Iwai a écrit : > At Wed, 01 Jul 2009 11:18:15 +0200, > Stéphane BERTHELOT wrote: > >> Takashi Iwai a écrit : >> >> At Tue, 30 Jun 2009 22:51:03 +0200, >> Stephane BERTHELOT wrote: >> >> Hm, so apparently your TV doesn't accept non-audio format? >> But TV accepted the ac3dec output with -R option, right? >> (Make sure this -- otherwise ac3dec might have decoded by itself.) >> >> Basically, -R means to send the encoded an AC3 stream (packed in the >> SPDIF format) without setting non-audio bit. Whether non-audio bit is >> 1 or 0 is the only difference between -C and -R. So, if -R really >> works but not -C, it means that the non-audio bit must be off no >> matter what you send. Weird. >> >> I'm sure the TV only accepted -R and not -C (or -P) with the same ac3 file. >> But I'm confused since I was quite sure -R would *decode* ac3 to PCM and then >> send it in LPCM format. >> > > Ah, yes, of course. That's logical, then, that -R works. > > Hm, then it's an issue of receiver side? > Can Windows send the raw AC3 and TV decodes it properly? > > > Takashi > > > Thanks you Takashi, After investigating on the Windows side (damn!) I finally found that with the latest Nvidia official HDMI audio out drivers I was also receiving only stereo PCM. I'm very angry against Sharp since their TV set outputs AC3 when switched on DVB tuner mode, it even offer "digital audio out settings" on analog inputs (scart / component /...) but strangely this menu is no more available when on an HDMI channel. I'm very upset about this, since this TV set is about 6 months old seems already deprecated. I'm trying to get someone at Sharp service to make an upgrade to get digital audio through HDMI to the optical output but I have little hope about this. I still can't figure why they do that, is it a digital entertainment system or not ? My old frist-gen dvd player does better ... Thanks anyway for your help and if you can give me some hints about how to convince Sharp to make an upgrade for this I will be welcome. I'm pretty sure some other users have had the same kind of problems... I now need either to buy an USB audio card with SPDIF out (or in/out) or an HDMI switch (some have spdif out) or even a real new HD Audio Amp, but this is getting more and more expensive ... Thanks a lot Takashi, and I hope I'll find a 'not so expensive' solution for this. (If anyone can give me pointer on cheap USB or HMDI hardware ... :) ) Stephane. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
