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Author Topic: DTS hiss at track lead-in, then sound.  (Read 1803 times)

avpman

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DTS hiss at track lead-in, then sound.
« on: February 04, 2006, 12:34:01 pm »

Playing DTS ripped from DTSCD's now works when using ASIO output mode! However, I get about .25 seconds of hiss sent to the external decoder before my M-Audio card automatically switches to non-audio/data mode. (Apparently DTS is considered non-audio/data). If I force the card to remain in "non audio/data" mode there is no hiss at beginning of DTS tracks. However, then there's no output when I play non-DTS tracks. I don't have this problem with another application "PowerDVD'.

I have not installed any additional decoders/filters because I have an outboard DTS decoder/processor. (Lexicon MC-1).

We're soooooooo close to having this work properly!
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JimH

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Re: Media Center 11.1.113
« Reply #1 on: February 04, 2006, 12:49:42 pm »

Have you tried changing the settings for track switching?  Cross fade, etc.
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avpman

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Re: Media Center 11.1.113
« Reply #2 on: February 04, 2006, 12:55:45 pm »

Have you tried changing the settings for track switching?  Cross fade, etc.

Crossfades are disabled (standard-gapped). Seek is standard. Changing the gap time has no effect. I'm open to other suggestions.
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dmm

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Re: DTS hiss
« Reply #3 on: February 04, 2006, 03:14:13 pm »

are you using an ASIO to kernal streaming utility?
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avpman

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Re: DTS hiss
« Reply #4 on: February 04, 2006, 04:50:40 pm »

are you using an ASIO to kernal streaming utility?

Nothing else. Straight out of MC to the SPDIF port to my Digital Processor.
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JimH

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Re: DTS hiss
« Reply #5 on: February 05, 2006, 07:58:01 am »

Did you try the support for the sound card?  Or updating the sound card driver?
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avpman

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Re: DTS hiss
« Reply #6 on: February 05, 2006, 08:33:29 am »

Did you try the support for the sound card?  Or updating the sound card driver?

Yes, I also logged a support request with them and I do have the latest driver. I'm waiting to hear back. It's a pro-quality M-Audio 192 card.

In the mean time, I am interested to see if anyone else has the same symptoms:
1) approx .25 sec of hiss at the lead-in of DTS tracks (ripped from CD).
2) silence if their soundcard is set to "data only" when playing non-DTS tracks when MC is using ASIO. DTS tracks play fine, NO hiss at lead-in when sound card is set to data only.

I don't know much of anything about the ASIO standard. I guess I was wondering of there is somehting that MC is not sending along with the data to tell the card what kind of data to expect; DTS or non-DTS. And that's why there is silence when playing non-DTS tracks. Everything I've read in previous posts on the subject says that you have to use ASIO mode in MC and set your card to Data Only. But like I said, when I do that, regular non-DTS tracks just play silence. The DTS tracks play fine, no hiss at lead-in with this setting.

I appreciate all the work you guys put into this. It would be great to get it figured out.
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avpman

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Re: DTS hiss at track lead-in, then sound.
« Reply #7 on: February 07, 2006, 06:29:04 pm »

bump  ;D
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