[mythtv-users] HDMI ac3 passthough audio

[Allen Edwards]

On Tue, Feb 10, 2009 at 10:07 AM, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
> On Tue, Feb 10, 2009 at 12:50 PM, James Armstrong
> <james at thearmstrongs.org> wrote:
>>> I think that the answers given don't address what the issue is here.
>>> I am not at home, so I can't try the given line out, but I will tell
>>> you my problem with audio over HDMI.  I can get regular audio to work
>>> using hw:0,3 or any number of variations on that.  I cannot, however,
>>> get S/PDIF passthrough to work over HDMI, only over my standard
>>> optical out.  I always just get clicking noises.  It is passing the
>>> digital as an analog signal.  I think the key in the line JP used is
>>> "alsa:device=iec958=1".  In alsamixer, I have "iec958", "iec958
>>> default", and "iec958 1" all listed but I have never found how to tell
>>> anything to use "iec958 1" as the device.  I will try it out tonight
>>> and see if it will give my proper passthrough or not, but I think that
>>> this may be the problem.  So, the question then would be, is there any
>>> way to address "iec958 1" as the passthrough device, a la
>>> "ALSA:iec958(AES0 0x02)"?
>>> J
>>
>> I have had the exact same problem. Can get hdmi audio, but if I enable
>> passthrough get clicking / pops
>>
>> - James
>
> again, I would use the plughw number for the device you want to use
> instead of playing with ALSA's naming scheme.
>
>
> --
> Steve
> http://www.mythtv.org/wiki/index.php/User:Steveadeff
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Does the post I did earlier with the new simplified digital output
apply to these problems?

Allen