[mythtv-users] cracking on some DTS tracks

Steven Adeff adeffs.mythtv at gmail.com
Sun Apr 4 19:46:25 UTC 2010


On Sun, Apr 4, 2010 at 3:38 AM, Nicolas Will <nico at youplala.net> wrote:
> On Sun, 2010-04-04 at 17:05 +1000, Jean-Yves Avenard wrote:
>> Hi
>>
>> On Sunday, April 4, 2010, Nicolas Will <nico at youplala.net> wrote:
>> > On Sun, 2010-04-04 at 09:59 +1000, Jean-Yves Avenard wrote:
>> >> Hi
>> >>
>> >> On 4 April 2010 04:19, Nicolas Will <nico at youplala.net> wrote:
>> >> > Hello,
>> >> >
>> >> > I have some movies with DTS soundtracks giving me cracking sounds
>> on
>> >> top
>> >> > of the proper soundtrack.
>> >> >
>> >> > Not all...
>> >> >
>> >> > Looking at the archives did not provide me with a working
>> solution.
>> >> >
>> >> > The MythTV system uses the on-board sound chips and is connected
>> to
>> >> a
>> >> > DTS-capable receiver from Yamaha using an optical S/PDIF cable.
>> >> >
>> >> > Any offers on solutions ar things to explore?
>> >>
>> >> Did you activate the software volume by any chance ?
>> >
>> > I have check.
>> >
>> > NO, I am not using it, MythTV is not controlling the volume.
>> >
>> > (but when I turn it on, I get a sound with no pops and cacks, just
>> not
>> > DTS anymore, so it looks like the DTS data is clean and can be
>> decoded)
>> >
>>
>> when checked, the DTS track is decoded, volume change is applied and
>> the stream is re-encoded as AC3.
>>
>> A DTS track is sent as-is to the amplifier if DTS passthrough Is
>> checked.
>>
>> So if you're hearing any sound distortion. It must come from your
>> amplifier.
>>
>> >>
>> >> Your Yamaha what does it show as receiving DTS or AC3 ?
>> >
>> > YES, nice DTS logo is there.
>> >
>>
>> so it definitely comes from your amp.
>>
>> Passthrough is just that. Pass through.
>
> Not what I wanted to hear, but something I had in mind...
>
> That may be a trigger to buy that upgrade!
>
> thanks,
>
> Nico

first try disabling DTS output but leaving AC3 on. Don't ask me why,
but on one of my machines this causes it to work properly when I had
what sounds like a similar problem.

-- 
Steve
http://www.mythtv.org/wiki/User:Steveadeff
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