SPDIF 5.1 compatible transmitter

[glias]

hello all,
I'm looking for a spdif transmitter which can support multichannel 5.1 format with 192kHz framerate.
Do you have any references to suggest me ?

regards

 

[Julf]

I'm looking for a spdif transmitter which can support multichannel 5.1 format with 192kHz framerate.

The maximum speed of S/PDIF is 6Mbit/s. 6 channels of 192 kHz @ 16 bits is 18 Mbit/.s, @24 bits it would be 27 Mbit/s.

 

[glias]

Thanks for your reply, yes you're right,, so which digital interface do I need ? HDMI ?
does it exist HDMI transceiver, or better : HDMI tranceiver only for audio ?

regards

 

[Julf]

Thanks for your reply, yes you're right,, so which digital interface do I need ? HDMI ?
does it exist HDMI transceiver, or better : HDMI tranceiver only for audio?

I think we need more information about what you are trying to do. Send data, or receive?

Full-resolution audio on HDMI data is protected by HDCP encryption and not easily accessible.

 

[glias]

I'm looking for an interface to connect my audio design to an AV receiver ideally in digital (because I don't want to have DACs and CINCH connexions for each channels). My need is only to transmit audio data to the AV receiver.

Thanks a lot for your help.

 

[Julf]

I'm looking for an interface to connect my audio design to an AV receiver ideally in digital (because I don't want to have DACs and CINCH connexions for each channels). My need is only to transmit audio data to the AV receiver.

Does your AV receiver have a HDMI input? If so, that is definitely the easiest solution.

 

[glias]

yes, I have a ONKYO AVR which have HDMI inputs... but you said that there is protection on HDMI ... does it exist chip wich could provide me audio interface (without video ...) ? or a chip with both, which could be interfaced with FPGA or µP ?

regards

 

[Julf]

yes, I have a ONKYO AVR which have HDMI inputs... but you said that there is protection on HDMI ... does it exist chip wich could provide me audio interface (without video ...) ? or a chip with both, which could be interfaced with FPGA or µP ?

The AVR should be able to decode the encrypted signal.

 

[glias]

OK, do you know HDMI chip that I can use with the FPGA ?

 

[Julf]

OK, do you know HDMI chip that I can use with the FPGA ?

No, and I do think HDMI is beyond DIY. What kind of source are you trying to design?

 

[pguerin]

Hi glias,

Maybe this link to crossover PC based can interrest you, look at the HDMI Output section :

Digital Crossover/EQ with Open-Source Software: HOWTO | Richard's Stuff

What kind of source are you trying to design?

good question

 

[glias]

Hi all,
I just want to design EQ for multichannel system. Well, if I understand well, the only way to carry multichannel in digital is HDMI.

I'm going to look for an HDMI controller then !

 

[pguerin]

Hi,

You can also carry multichannel with multiple SPDIF outputs, ie with multiple sound cards or with a DSP as done in the Najda :

WAF-Audio

four SPDIF out correspond for 8 channels digital out.

What is you design, PC and sofware or hardware ?

 

[glias]

Thanks a lot Pascal, I didn't know WAF Audio.
It's a hardware project...

 

[pguerin]

BIG thread on diyaudio

http://www.diyaudio.com/forums/digi...p-xover-project-part-2-a-166.html#post3708185

i've just finished my Najda DSP !!

An alternative could be miniDSP products :

http://www.minidsp.com/products/product-selection-guide

 

[sakthivel159]

s/pdif/i2s transceiver support CSR8670 bluetooth audio module link