DIY DTS/DD processor?

ezkcdude · 28th November 2006, 05:42 PM

I could swear I've seen this come up on the forums, although maybe it was on another one. Has anyone tried to DIY a processor for DTS/Dolby Digital? I was talking about this the other day with my brother. There seems to be a few all-in-one chips from Cirrus and TI that may do the trick, but I'm wondering ahead of time if this will be a futile attempt. If there is a thread that exists on this subject, please give me a link. Thanks.

Nisbeth · 28th November 2006, 06:56 PM

Plenty of threads about this I should think.

Basically, you need a license from Dolby/DTS to purchase the chips and MOQ is typically 1000 pcs. In short: Many have tried, none have suceeded....

/U.

PS: IIRC some people have build something themselves, but always starting out with the DSP-board from a scrapped DVD or receiver.

rfbrw · 28th November 2006, 07:37 PM

Try the STA310 from ST Microelectronics.

gmarsh · 29th November 2006, 02:30 AM

The Dolby AC-3 spec (as A/52) is published and available almost anywhere on the net, and there's lots of software already that can decode it. For DTS, look around for libdca / libdts... originally it was part of VideoLAN, but it's been pulled from development due to patent issues.

Both will give you a decoder that you can port to a DSP, if you're so inclined. Just you won't be able to share the DTS version.

steverb · 29th November 2006, 06:13 AM

Would it be possible to use the chips out of a (old/cheap/dead) DVD 5.1 player??

DragonMaster · 9th December 2006, 02:39 AM

Quote:

Would it be possible to use the chips out of a (old/cheap/dead) DVD 5.1 player??

Possibly, if it's not a one-chip solution, which connects directly to the transport and outputs I2S, unless you can find the RAW data stream on the transport cable and send something else.

28th November 2006, 05:42 PM	#1
ezkcdude diyAudio Member Join Date: Dec 2005 Location: Atlanta	DIY DTS/DD processor? I could swear I've seen this come up on the forums, although maybe it was on another one. Has anyone tried to DIY a processor for DTS/Dolby Digital? I was talking about this the other day with my brother. There seems to be a few all-in-one chips from Cirrus and TI that may do the trick, but I'm wondering ahead of time if this will be a futile attempt. If there is a thread that exists on this subject, please give me a link. Thanks.

29th November 2006, 06:13 AM	#5
steverb diyAudio Member Join Date: May 2003 Location: Ak	Would it be possible to use the chips out of a (old/cheap/dead) DVD 5.1 player?? __________________ The DIY bug. Nothing is ever finished.

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28th November 2006, 06:56 PM	#2
Nisbeth diyAudio Member Join Date: Jan 2001 Location: Denmark	Plenty of threads about this I should think. Basically, you need a license from Dolby/DTS to purchase the chips and MOQ is typically 1000 pcs. In short: Many have tried, none have suceeded.... /U. PS: IIRC some people have build something themselves, but always starting out with the DSP-board from a scrapped DVD or receiver.

28th November 2006, 07:37 PM	#3
rfbrw diyAudio Member Join Date: Oct 2001 Location: .	Try the STA310 from ST Microelectronics.

29th November 2006, 02:30 AM	#4
gmarsh diyAudio Member Join Date: Apr 2004 Location: Halifax, NS, Canada	The Dolby AC-3 spec (as A/52) is published and available almost anywhere on the net, and there's lots of software already that can decode it. For DTS, look around for libdca / libdts... originally it was part of VideoLAN, but it's been pulled from development due to patent issues. Both will give you a decoder that you can port to a DSP, if you're so inclined. Just you won't be able to share the DTS version.

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