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Noise on MP3 over optical
Hello everybody, I am configuring my HTPC with a Point of View mother board with nvidia ION plataform.I have connected to the A/V receptor (Sony STR-DG710) with an optical cable.

The problem is that when I hear a MP3 music I hear noise, but if I hear an HD film with Dolby or something like this, I listen perfectly.

The O.S. I am using is Debian Lenny, on XBMC is the same, noise with MP3 music and perfect with HD films

If am am listening a HD film on the A/V receptor it puts “DOLBY DIGITAL 3/2.1“. But when I am listening MP3 on the receiver puts “PCM 48 kHz“. It could be something about audio compresion?

Here you have some audio configuration captures: (they are in spanish)

Can someone help with this? this is so annoying.

Sorry about my english and thanks for all.
Here is my audio carr information:

$ cat /proc/asound/cards
0 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xfae78000 irq 20

$ cat /proc/asound/pcm
00-01: ALC662 Digital : ALC662 Digital : playback 1
00-00: ALC662 Analog : ALC662 Analog : playback 1 : capture 1

I am new on this and I don't know what to do.

Thanks for all.

Noise on MP3 over optical00