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Old 15th April 2011, 02:58 PM   #1
udhay_cit is offline udhay_cit  India
diyAudio Member
Join Date: Feb 2008

Hi i am not familiar with audio processors. I want to know the answer for some questions....

Can i design my own SPDIF to 5.1 audio converter with only basic electronics knowledge...?

Is there any need of DSP processor(and program) to design the converter...?

Anybody have the experience with SPDIF to 5.1 converter.....?

I found lot of circuit design for SPDIF to STEREO converter, but i can not find a reliable circuit for 5.1 converter. Is it possible to convert the SPDIF to 5.1 Analog....?

Is it too complicated?

If you have any working circuit then please guide me to design my own converter.....

Thanks & regards
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Old 15th April 2011, 08:38 PM   #2
SoNic_real_one is offline SoNic_real_one  United States
diyAudio Member
Join Date: Jan 2008
Location: Virginia
Over the SPDIF you have only 2 practical ways to send 5.1 audio: DolbyDigital or DTS. Those are proprietary, compressed formats. There are also other options, used more in the PC "world", like AAC 5.1 or MPEG 5.1...
This is because SPDIF bandwidth cannot support uncompressed 5.1, only 2.0...

There are circuits that have incorporated those decoders and in their price there is included a license fee. Example. Is that accesible to a DIY? I would say NO because are usually in 120-144 pin capsules (require external memory connection).
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Old 10th September 2012, 09:56 AM   #3
udhay_cit is offline udhay_cit  India
diyAudio Member
Join Date: Feb 2008
Finally..... after 1year.... I got the STA310 chip from china & its working fantastic.....
They are also have lot of PT8501 & it's a standalone IC, ready to decode... Not necessary for programming.... Both ic chips are working good, specially STA310 is Excellent....
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Old 10th September 2012, 10:40 AM   #4
Aucosticraft is offline Aucosticraft  India
diyAudio Member
Join Date: Nov 2009
Location: Pune
Great news...... Uday. I should call it an achievement. even i was working hard to find one such kind of chip. but no success.

Can you share the details to us pls. like where in china did u procure? how did u procure? what is the price? any other thing like special license fees was incurred from you.

Eagerly waiting for the reply ...
There is always a first time....
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Old 21st July 2016, 10:20 PM   #5
imranics is offline imranics  India
diyAudio Member
Join Date: Jan 2014
hi i want to kwno about sta310 chip programming methods or source code ? can u help me
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