SB Audigy 2 digital inpt resampling
Posted by: Martin Payne on 05 October 2004
I have an SB Audigy 2 Platinum sound card with drive-bay box:-
I am trying to use the optical input to record from my Pace Twin Freview box. I want to capture a straight digital signal, but the SB is being too helpful and will let me capture at any of the available sample rates, so it must be re-sampling.
Does anyone know how I can simply capture the incoming data stream without resampling, etc?
cheers, Martin
E-mail:- MartinPayne (at) Dial.Pipex.com. Put "Naim" in the title.
I am trying to use the optical input to record from my Pace Twin Freview box. I want to capture a straight digital signal, but the SB is being too helpful and will let me capture at any of the available sample rates, so it must be re-sampling.
Does anyone know how I can simply capture the incoming data stream without resampling, etc?
cheers, Martin
E-mail:- MartinPayne (at) Dial.Pipex.com. Put "Naim" in the title.
Posted on: 05 October 2004 by Martin Payne
Cliff,
I have been through all of the control panel items I can find, and can't see anything that sets the bitrate that stuff is captured at.
Unless you're talking about Wavelab Lite, which is just a wave editing package? Mine offers the same options - record at any bitrate you like.
Actually, I don't believe it goes through A-D-A. There are some settings in the control panel regarding how much CPU effort to put into re-sampling. Even so, I don't want it to resample!
The other problem is I don't know what the sampling rate is from the Pace box! Freeview can transmit in 32, 44.1 or 48KHz.
In case anyone knows, I'm trying to copy the Hitch-Hikers guide to the Galaxy stuff of Radio 4.
cheers, Martin
E-mail:- MartinPayne (at) Dial.Pipex.com. Put "Naim" in the title.
I have been through all of the control panel items I can find, and can't see anything that sets the bitrate that stuff is captured at.
Unless you're talking about Wavelab Lite, which is just a wave editing package? Mine offers the same options - record at any bitrate you like.
Actually, I don't believe it goes through A-D-A. There are some settings in the control panel regarding how much CPU effort to put into re-sampling. Even so, I don't want it to resample!
The other problem is I don't know what the sampling rate is from the Pace box! Freeview can transmit in 32, 44.1 or 48KHz.
In case anyone knows, I'm trying to copy the Hitch-Hikers guide to the Galaxy stuff of Radio 4.
cheers, Martin
E-mail:- MartinPayne (at) Dial.Pipex.com. Put "Naim" in the title.
Posted on: 06 October 2004 by Paul Ranson
My M-Audio card has a control panel setting to take its clock from the S/PDIF input or internally. You need something similar, to get the SB to clock from the TOSLink. But that still doesn't force the recording software to that rate, and the card will 'resample' to match the requested output data rate. Consultation with the SB groups or fora would be sensible, followed by buying another card, or probably preferably one of those USB connected things.
In practice what does it sound like if you simply record at 16/44k1 and let the software/hardware do its worst?
Paul
In practice what does it sound like if you simply record at 16/44k1 and let the software/hardware do its worst?
Paul
Posted on: 06 October 2004 by Martin Payne
quote:
Originally posted by Cliff Patterson:
That was my conclusion. You can only set the recording rate. I presume that it senses the rate from the Toslink anyway, so the only real issue is whether you want to up sample or down sample the resultant recording.
Initially this was just an exercise to get the stuff off the HD in the Pace box, and into the PC.
Thinking about it some more, I guess this stuff will end up on an audio CD, so I'll just capture at 44.1KHz.
I will look into a USB S/PDIF capture thingy, too. Thanks Paul. Do you have any recommendations?
cheers, Martin
E-mail:- MartinPayne (at) Dial.Pipex.com. Put "Naim" in the title.
Posted on: 06 October 2004 by Andrew L. Weekes
The Audigy 2 resamples everything internally, in hardware. You can't bypass it.
An M-Audio Audiophile 24/96 is a much better option for your application. The effects of on-the-fly hardware re-sampling are clearly audible, to the point that the sound quality of an old AWE64 is better than any of the Live or Audigy cards for recording at 44.1k.
Andy
An M-Audio Audiophile 24/96 is a much better option for your application. The effects of on-the-fly hardware re-sampling are clearly audible, to the point that the sound quality of an old AWE64 is better than any of the Live or Audigy cards for recording at 44.1k.
Andy
Posted on: 06 October 2004 by Martin Payne
quote:
Originally posted by Andrew L. Weekes:
The Audigy 2 resamples everything internally, in hardware. You can't bypass it.
Andy,
I know that used to be true of the original Audigy, but I assured myself that the Audigy 2 didn't do this before I decided to buy it.
There seems to be quite a lot of discussion about this on the web, so I'm a but miffed about that.
If the input sctream is 44.1KHz, and I record at 44.1KHz, is it going to resample to 48KHz in the meantime?
cheers, Martin
E-mail:- MartinPayne (at) Dial.Pipex.com. Put "Naim" in the title.
Posted on: 08 October 2004 by Andrew L. Weekes
quote:
If the input sctream is 44.1KHz, and I record at 44.1KHz, is it going to resample to 48KHz in the meantime?
Unfortunately yes.
Everything that goes in gets re-sampled internally at 48k, it's then asynchronously resampled to 44.1k if that's the final o/p format.
The problem is that on-the-fly asynchronous conversion is often not very good, if you can find a good recording application (like Cooledit Pro, or whatever Adobe call it now) you can record at 48k, then post-process in software, this is better quality, but slower.
It idoesn't help at all though if the input digital stream is 44.1k!
Andy.
Posted on: 08 October 2004 by Martin Payne
Andy,
any thoughts on http://www.3dss-forums.com/cgi-bin/wwwthreads/showflat.pl?Cat=&Board=Forum22&Number=104303&page=25&view=collapsed&sb=5&o=all&fpart=?
cheers, Martin
E-mail:- MartinPayne (at) Dial.Pipex.com. Put "Naim" in the title.
any thoughts on http://www.3dss-forums.com/cgi-bin/wwwthreads/showflat.pl?Cat=&Board=Forum22&Number=104303&page=25&view=collapsed&sb=5&o=all&fpart=?
cheers, Martin
E-mail:- MartinPayne (at) Dial.Pipex.com. Put "Naim" in the title.