32-bit IEEE (Float) recording distortion -Sound Forge - PC

Subject:32-bit IEEE (Float) recording distortion Posted by: tmostad Date:1/16/2004 10:10:39 AM Using SF7.0a I can record from the microphone in the various bit resolutions perfectly up until 32-bit IEEE (Float) but then I get nasty distortion. I have tried various sample rates as well as reinstalling and no change. Any ideas? XP Pro, 2G RAM, 3 GHz P4, SB Audigy 1.
Subject:RE: 32-bit IEEE (Float) recording distortion Reply by: Iacobus Date:1/17/2004 12:34:14 PM It may have to do with your soundcard's drivers. The Audigy 1 does 16-bit/48 kHz internally and upconverts to whatever resolution/sample rate you're using in your project. I'm just not sure that the Audigy 1 is up to the task. HTH, Iacobus ------- RodelWorks - Original Music for the Unafraid mD's ACIDplanet Page
Subject:RE: 32-bit IEEE (Float) recording distortion Reply by: Sonic Date:1/20/2004 8:30:30 AM One of the real problems with the Windows kmixer in WinXP is that it will accept most any format requested even if the hardware can't handle it, then try to do the right conversions itself. But this doesn't always work due to conflicts in driver/kmixer negotiation, and adds undesirable processing outside of the card even if it works. This and other kmixer interference may be good for Joe Consumer, but is detrimental to pro audio and one of our biggest gripes with Windows. We've voiced our opinions with MS and will continue to discuss it with them in the future. In the meantime, WinXP users really need to be aware of what the card is _supposed_ to allow, rather than what appears to (perhaps) work. J. P.S. I'm not aware of any PCI cards that support floating point I/O at all, though I've heard that a few USB or Firewire devices may do it. Either way, I feel pretty confident in saying that 24-bit PCM is plenty of bits for recording. If you are concerned about loss during processing, you can enable the "Use floating point temporary files" preference in Sound Forge.
Subject:RE: 32-bit IEEE (Float) recording distortion Reply by: Geoff_Wood Date:1/21/2004 9:24:03 PM The other thing is "why try to record at such specs when the source is an Audigy" ? Even with the best quality 24 bit soundcards, there is nothing to be gained by recording at over this. The distortion could be you PC choking on try to do so much (unnecessary) work. geoff

Subject:32-bit IEEE (Float) recording distortion

Posted by: tmostad

Date:1/16/2004 10:10:39 AM

Using SF7.0a I can record from the microphone in the various bit resolutions perfectly up until 32-bit IEEE (Float) but then I get nasty distortion. I have tried various sample rates as well as reinstalling and no change. Any ideas?

XP Pro, 2G RAM, 3 GHz P4, SB Audigy 1.

Subject:RE: 32-bit IEEE (Float) recording distortion

Reply by: Iacobus

Date:1/17/2004 12:34:14 PM

It may have to do with your soundcard's drivers.

The Audigy 1 does 16-bit/48 kHz internally and upconverts to whatever resolution/sample rate you're using in your project. I'm just not sure that the Audigy 1 is up to the task.

HTH,
Iacobus
-------
RodelWorks - Original Music for the Unafraid
mD's ACIDplanet Page

Subject:RE: 32-bit IEEE (Float) recording distortion

Reply by: Sonic

Date:1/20/2004 8:30:30 AM

One of the real problems with the Windows kmixer in WinXP is that it will accept most any format requested even if the hardware can't handle it, then try to do the right conversions itself. But this doesn't always work due to conflicts in driver/kmixer negotiation, and adds undesirable processing outside of the card even if it works.

This and other kmixer interference may be good for Joe Consumer, but is detrimental to pro audio and one of our biggest gripes with Windows. We've voiced our opinions with MS and will continue to discuss it with them in the future.

In the meantime, WinXP users really need to be aware of what the card is _supposed_ to allow, rather than what appears to (perhaps) work.

J.

P.S. I'm not aware of any PCI cards that support floating point I/O at all, though I've heard that a few USB or Firewire devices may do it. Either way, I feel pretty confident in saying that 24-bit PCM is plenty of bits for recording. If you are concerned about loss during processing, you can enable the "Use floating point temporary files" preference in Sound Forge.

Subject:RE: 32-bit IEEE (Float) recording distortion

Reply by: Geoff_Wood

Date:1/21/2004 9:24:03 PM

The other thing is "why try to record at such specs when the source is an Audigy" ? Even with the best quality 24 bit soundcards, there is nothing to be gained by recording at over this.

The distortion could be you PC choking on try to do so much (unnecessary) work.

geoff