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Record digital audio

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Anonymous
January 25, 2005 10:41:54 PM

Archived from groups: rec.audio.tech (More info?)

I want to record ac3(dolby digital) audio from the sat decoder to pc.
My decoder has a RCA out ac3. How can I plug it to the pc? Can I link it
to the "aux in" of the audio and say to same software "hey, this is not
music, this is digital data!" ? Or I have to use some special hw? How
much does it costs?
Thanks and sorry for my poor english
M

More about : record digital audio

Anonymous
January 25, 2005 10:41:55 PM

Archived from groups: rec.audio.tech (More info?)

"MV" <tuzzoNOSPAM83@tiscali.it> wrote in message
news:_pwJd.6904$fq5.4123@news.edisontel.com
> I want to record ac3(dolby digital) audio from the sat decoder to pc.
> My decoder has a RCA out ac3.

This is a 48 KHz digital signal.

>How can I plug it to the pc?

Have a audio interface with a "bit perfect" digital input.

> Can I link it to the "aux in" of the audio and say to same software "hey,
> this
> is not music, this is digital data!" ?

Nope, not as a rule.

>Or I have to use some special hw?

Yes.

> How much does it costs?

Starting say about $100 - example the M-Audio AP 2496:

http://www.zzounds.com/item--MDOAP2496
Anonymous
January 25, 2005 11:31:08 PM

Archived from groups: rec.audio.tech (More info?)

"MV" <tuzzoNOSPAM83@tiscali.it> wrote in message
news:_pwJd.6904$fq5.4123@news.edisontel.com...
>I want to record ac3(dolby digital) audio from the sat decoder to pc.
> My decoder has a RCA out ac3. How can I plug it to the pc? Can I link it
> to the "aux in" of the audio and say to same software "hey, this is not
> music, this is digital data!" ? Or I have to use some special hw? How much
> does it costs?
> Thanks and sorry for my poor english
> M

I've managed to record 48kHz Dolby Digital (from an XBox) sucessfully.

I used a Soundblaster Audigy 2 with an optical IO bracket I built, but would
guess that the versions with a live drive would work.

Instead of creative's standard driver, I used the kX project driver which
allows for direct recording. To actually record the data, I used Adobe
Audition, configured for 48kHz, 16bit Stereo.

The file was saved as a .pcm file (raw data), and was then truncated with a
hex editor so that it started on a frame. When renamed to *.ac3, PowerDVD
played it quite happily, and my amp recognised it as being Dolby Digital.

Hope this helps,

Chris Key
!