Re: Surround sound via optical spdif out

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Lee Revell <rlrevell@xxxxxxxxxxx> writes:

>> No you should use:
>> 
>>   ac3dec -C some_ac3_file.ac3
>
> No, that will decode the AC3 file on the host in software, what Nathan
> wants to get working is AC3 passthrough, where the receiver does the AC3
> decoding.

Sorry, I must respecfully disagree. I've just tried this command:

$ ac3dec -C en.ac3 
Using PCM device 'plug:iec958:{AES0 0x2 AES1 0x82 AES2 0x0 AES3 0x2}'
AC3 Stream 48.0 KHz 384 kbps

And I can see the dolby digital AC3 indication on the display of my
Yamaha DSP-A1 amplifier which means the passthrough is workign fine.
(of course without taking into account the sata pb that's plaguing me
;-) )

And iecset shows:

$ iecset
Mode: consumer
Data: non-audio
Rate: 48000 Hz
Copyright: protected
Emphasis: none
Category: PCM coder
Original: original
Clock: 1000 ppm


Cheers


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