need sheet 5.1 Dolby digital!!!

[powerm]

hello knows someone 5.1 dolby digtal a circuit? a project in the net would not be bad. thanks for many links.

 

[shawndaking]

What's The Application ?

IS it Encoder Or Decoder, Or Something Else ?

 

[bimbla]

Dolby digital

Both the hardware and software version of the decoder is a closely guarded secret.

NO ONE has it!

bimbla.

 

[powerm]

like this

**broken link removed**

 

[Analyzer]

Hi,
There is a decoder schematic in www.epanorama.net Go to audio section->home theathre section.Or directly search "dolby decoder" in search section.I built it and it works with small amplifier.With big amplifier (>200 W) distortion is a big problem.

Analyzer.

https://www.epanorama.net/links/audiocircuits.html#surround

 

[powerm]

thx, the side is very interressant. but the Link "Surround
sound decoder MK1" don´t work. can you send me that sheet?


powerm

 

[jourval]

I built "M1" decoder too, it work more or less,
but them use ultra low quality and obsolete parts,
LM324 is actually worst amplifier in the world,
not suitable for audio at all, (you'll get 10 % TND).
So, main principle is right, - implementation is wrong.
Make your own redesign based on the same principles
and it will be much better.

 

[GeneralMadDog]

Hi!

The decoders on epanorama.net are analog dolby prologic decoders, not digital!
There was a prologic decoder in Elektor January 1995. I build this thing and it works very well!
The circuit is more complex than the one on epanorama.net.

bye
The General

 

[Analyzer]

Yea,
LM324 is no good for this job i changed them to another ic (sorry, i can't remember).I checked its page and it works well? I can not send datasheet because there is no datasheet only page.Please try to visit again.

Analyzer.

 

[bimbla]

Dolby 5.1

When you say Dolby Digital 5.1, how can you settle for something like MK-I?

Anyway, remember, in a true surround sound system there is no dialogue leakage in the rear channels.

All the best!

bimbla.

 

[Analyzer]

Well,

It is just a suggestion.Nobody is obligated to use it.

Analyzer.

 

[powerm]

thx for all!!! i have found an Atmel Chip!!! that was all what iwant. :wink:



[url]http://www.atmel.com/dyn/resources/prod_documents/DOC1133.PDF

:x :x :x

[/url]

 

[bimbla]

Powerm,

Your link does not work.
There is nothing there.

bimbla.

 

[bimbla]

Try the newly released SigmaDSP (AD1940) from Analog devices. This has librayies for surround sound and you can make your own custom program.

SigmaDSP (AD1954) is a three channel version which can also be programmed for surround sound.

Mind you SigmaDSP processes sound in digital domain.

bimbla.

 

[gsmsikar]

i need to build a 5.1 channel Dolby Digital Decoder Amplifier to play DTS-CD or AC3 format files which are available in 5.1 channels ...

i have have a 5.1 Sound Card, and use Foobar2000, a free and powerful multi-purpose audio player but i dont have the amplifier speaker for this ,
so i want to make one ..

can anyone help me ...

please reply...