[mythtv-users] audio issue using Internal player

Aaron aaron at rb303.net
Thu Dec 3 15:51:01 UTC 2009


Heh, I never thought of it as sounding like a motor boat, but now that you
say it, it really does. I have this issue as well on a nForce 630 chipset.
It does only happen occasionally so I just thought it was the cheap internal
sound card. Now that I think of it, this also happened in Windows every once
and a while, but I narrowed that down to bad drivers. I removed the bad
drivers and it went away.

One thing I have noticed, it only does it on DTS tracks (DD/AC3 seem fine).

I have noticed it does it in Myth more than anything else. I installed XBMC,
and have had 0 audio issues since I tried it. DTS crackling is totally gone,
so it the motor boating wind down.

I use Toslink SPDIF out to my Yamaha receiver.

Aaron

On Thu, Dec 3, 2009 at 9:56 AM, Allen Edwards <allen.p.edwards at gmail.com>wrote:

>
>
> On Thu, Dec 3, 2009 at 12:37 AM, Marius Schrecker <marius at schrecker.org>wrote:
>
>>  Hi,
>>
>>
>>  I wrote to the list a while back about a motorboating noise I sometimes
>> get. At the time I hadn't isolated when it happens, and couldn't stop the
>> behaviour without a complete cold reboot (unloading modules doesn't help).
>>
>>
>> I use digital passthrough with my onboard Nforce4.
>>
>>
>> The problem occurs when I abruptly end playback from the internal player,
>> it's as if the audio stream isn't correctly ended and the audio hardware
>> goes into a feedback loop. Using mplayer or xine, I don't have this issue,
>> so they must have a mechanism for rounding off the audio stream.I also
>> notice that the clicks and pops when I chance audio codec or format are
>> much, much queiter in mplayer and xine than using Internal.
>>
>> The solution to the problem is also much simpler than I thought. I just
>> have to feed the sound system a new stream, and the loop stops.
>>
>>
>> Does anyone know if this is a known issue?
>>
>> Can I end every playback from Internal by playing a short, empty audio
>> stream? If so, how?
>>
>>
>> Cheers!
>>
>>
>> Marius
>>
>>
> I have this happen occasionally.  I can't remember what I do to stop it but
> maybe it is just turn off the TV.  I do not know if this is a known issue
> and I have a little old version of Myth, Mythbuntu 8.04 LTS.  I have done
> only a few updates and only to solve a specific problem. If you find out
> there is an update to fix this please post in this thread.
>
> Allen
>
>
>
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>
>
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