Re: [Alsa-user] Stereo Downmix with cmipci
On Sat, Mar 15, 2008 at 3:43 PM, Hendrik Friedel [EMAIL PROTECTED] wrote: Hello, I'm trying to get the AC3 output coming from a digital Video Card converted to a plain old analog stereo signal. For this, I connected the SPDIF out of the video Card to the SPDIF in of the soundcard (cmipci, CMI8738MC6). For stereo/pcm signals, this works. I get the digital signal converted to an analog signal at the speaker output of my soundcard. But if the TV-Station sends AC3 signals, apperently this is not downmixed to stereo by the soundcard. Moreover, it sounds like a helicopter. How do I have to configure the soundcard to convert the AC3 to stereo? You can't, unless the card does hardware AC3 decoding (very rare) or you use a userspace app to decode and output the sound. Lee - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
[Alsa-user] Stereo Downmix with cmipci
Hello, I'm trying to get the AC3 output coming from a digital Video Card converted to a plain old analog stereo signal. For this, I connected the SPDIF out of the video Card to the SPDIF in of the soundcard (cmipci, CMI8738MC6). For stereo/pcm signals, this works. I get the digital signal converted to an analog signal at the speaker output of my soundcard. But if the TV-Station sends AC3 signals, apperently this is not downmixed to stereo by the soundcard. Moreover, it sounds like a helicopter. How do I have to configure the soundcard to convert the AC3 to stereo? This: # amixer cset iface=MIXER,name='IEC958 Mix Analog'on amixer: Cannot find the given element from control default Seemed promising, but it's not accepted by the soundcard. I had all this working once, IIRC. And -IIRC- the above command did work. Any suggestions? Regards, Hendrik - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
