James Courtier-Dutton <[EMAIL PROTECTED]> writes: > As a general rule, for PCM stereo sound, do not set the spdif > "non-audio" bit. For AC3 or DTS, set the "non-audio" bit, because AC3 > and DTS are not PCM, but instead just data passed over a simple 16bits > per channel stereo PCM digital signal. > > The alsa device name to use for "non-audio" is > "iec958:AES0=0x6,AES1=0x82,AES2=0x0,AES3=0x2" > Full command line: - > ac3dec -C -Diec958:AES0=0x6,AES1=0x82,AES2=0x0,AES3=0x2 filename.ac3
Unfortunately my amplifier still refuses to recognize the AC3 stream: $ ./ac3dec -C -Diec958:AES0=0x6,AES1=0x82,AES2=0x0,AES3=0x2 dolby.ac3 Using PCM device 'iec958:AES0=0x6,AES1=0x82,AES2=0x0,AES3=0x2' AC3 Stream 48.0 KHz 448 kbps I get no sound, and my amplifier mentions 48KHz PCM instead of dolby digital source. So I guess that the non-audio bit is clobberred somewhere in ALSA processing... Is anything I can do to to find out where this bit is cloberred ? Thanks ------------------------------------------------------- This SF.Net email is sponsored by: Oracle 10g Get certified on the hottest thing ever to hit the market... Oracle 10g. Take an Oracle 10g class now, and we'll give you the exam FREE. http://ads.osdn.com/?ad_id=3149&alloc_id=8166&op=click _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
