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Old 4th August 2008, 12:36 AM   #1
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Default 8 channel LPCM over HDMI, It's Multi Amp for Everyone

Hi Today I could play Linear PCM 7.1 channel WAV file with HDMI mobo, to DENON AVR-1908, and LINN Komponent 104 3Way active mode.

For detail please see my site.

http://koonlab.com/MultiAmpForEveryo...DMI_AVAMP.html
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Old 4th August 2008, 08:49 AM   #2
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Hi Koon.

Good to see your progress.

As far as I understand. You're generating a multichannel .wav file
which you send over HDMI.

Why not 6 seperate PCM channels?

The Denon amp is not a full digital amp, right!?!

Have you looked in building a multichannel HDMI receiver?
A dedicated multichannel HDMI receiver with I2S-out would solve a lot of problems in the DIY community.


Cheers
\Klaus
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Old 4th August 2008, 09:36 AM   #3
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Koon.

Ever thought about switching to Linux?
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Old 4th August 2008, 10:07 AM   #4
phofman is offline phofman  Czech Republic
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Well, HDMI multichannel support in ALSA is not exactly complete
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Old 4th August 2008, 01:50 PM   #5
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Quote:
Why not 6 seperate PCM channels?
The Denon amp is not a full digital amp, right!?!
Have you looked in building a multichannel HDMI receiver?
[/B]
multi channel WAV file contains 8 PCM channels inside, and each channels are syncronized.

Denon amp is not a full digital.
Just selected cheap HDMI1.3 Linear PCM 8 channel compatible.

HDMI-I2S?
HDMI receiver will require thousands $ per year just to be a member, and I don't think individual person can be a member.
=================
This is "MultiAmp for Everyone" project,
Remember I already have "FIR and Full digital multi amp" only for me, by USB2.0-I2S, and 4 Channel Full digital.
=================

Linux:
If I can use Microsoft Visual Studio 2008 on Linux, I can switch to Linux. and If package software market sales on Linux is greater than Windows, I WILL switch to Linux
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Old 4th August 2008, 03:00 PM   #6
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I stepped over this:

http://www.vativ.com/pdf/18-00PB-C032.pdf

Perhaps an evaluation board is the way forward.
Though it seems that they don't have all outputs accessable.
And I am also wondering if it would decode the multichannel
.wav

I just left Entropics a message to see if they offer multichannel
audio eval boards.
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Old 4th August 2008, 10:09 PM   #7
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Default Panasonic SA-XR57

This has HDMI input and use TI "PurePath" all digital technology

Click the image to open in full size.

It looks like a good poor man KoonsLabs system solution

I just need to find somebody from USA that can buy it from Amazon for $229.99 and send it to me.
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Old 4th August 2008, 11:09 PM   #8
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Hi Thomas I think you need SA-XR700, in user's manual

"The unit is compatible with linear PCM 8-channel surround
signals decoded by the BD player and other equipment (up to
96 kHz/24 bit). See the operating instructions for equipment
used for playback."

but nothing I can find in SA-XR57 manual about linear PCM 8 channel.
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Old 4th August 2008, 11:26 PM   #9
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Yes, linear PCM 8-channel surround. How do you produce it from ordinary stereo wav files we already have on the PC?
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Old 4th August 2008, 11:43 PM   #10
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Pls see these 2 page,

http://koonlab.com/CUDA_RealFIR/CUDA%20Real%20FIR.html

http://koonlab.com/MultiAmpForEveryo...DMI_AVAMP.html
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