Pitch different in source and recorded file -Sound Forge - PC

Subject:Pitch different in source and recorded file Posted by: ezrider Date:8/19/2001 4:23:11 PM Recording digital (sp/dif) input from DAT to HD WAV file, I find there is a discrepancy in the abs time display on my DAT player and in the record timer of Sound Forge XP. The time seems to advance faster in SF (I believe that it was SF that was faster but could have it backwards) than on my DAT display when digitally dubbing a tape. At first I ignored this, and thought it was just a strange artifact. Until I had the chance to listen A/B to the DAT and the recorded CD back to back. Now I notice that there is a discrepancy of about about 1/2 step between the two, with the DAT being slightly but quite noticibly higher in pitch than the dubbed CD. I can only assume that the timing clock on the A/P2496 or PC and on the DAT are not in sync. How do I fix this?
Subject:RE: Pitch different in source and recorded file Reply by: Rednroll Date:8/19/2001 11:07:15 PM It sounds like the wrong sample rate problem, which is very easy to do when recording in digital through a spdif input. Your sound card should have an adjustment in switching between Internal and External Clock. Set this to "External", this will make your DAT player the master Clock, so that the 2 devices will properly Sync. Now check the Sample rate on your DAT when you press play. Either it is at 32Khz and Sound Forge is set to record 44.1khz or maybe your DAT is a 44.1Khz and sound forge is Set to 48Khz. Make sure the sample rate on the DAT tape matches whatever you have selected in the Record window of Sound Forge. If they do not match this will cause a pitch difference between the source and what get's recorded in Sound Forge. Good luck, Brian Franz
Subject:RE: Pitch different in source and recorded file Reply by: BrentA Date:8/20/2001 3:54:37 AM >> How do I fix this? Like Brian said, verify that Sound Forge is set to whatever playback rate your DAT is operating at. Then sync your card to your DAT clock. If it's not obvious where to do this, have a look in Control Panel \| System. For example, this is where my clock settings are located (maybe yours are too): Open Control Panel Click System icon Click Device Manager Tab Expand Sound Video and Game Controllers Click Layla By Echo (my sound card) Click Clocks Tab

Subject:Pitch different in source and recorded file

Posted by: ezrider

Date:8/19/2001 4:23:11 PM

Recording digital (sp/dif) input from DAT to HD WAV file, I find there is a discrepancy in the abs time display on my DAT player and in the record timer of Sound Forge XP. The time seems to advance faster in SF (I believe that it was SF that was faster but could have it backwards) than on my DAT display when digitally dubbing a tape. At first I ignored this, and thought it was just a strange artifact.

Until I had the chance to listen A/B to the DAT and the recorded CD back to back. Now I notice that there is a discrepancy of about about 1/2 step between the two, with the DAT being slightly but quite noticibly higher in pitch than the dubbed CD.

I can only assume that the timing clock on the A/P2496 or PC and on the DAT are not in sync.

How do I fix this?

Subject:RE: Pitch different in source and recorded file

Reply by: Rednroll

Date:8/19/2001 11:07:15 PM

It sounds like the wrong sample rate problem, which is very easy to do when recording in digital through a spdif input.
Your sound card should have an adjustment in switching between Internal and External Clock. Set this to "External", this will make your DAT player the master Clock, so that the 2 devices will properly Sync. Now check the Sample rate on your DAT when you press play. Either it is at 32Khz and Sound Forge is set to record 44.1khz or maybe your DAT is a 44.1Khz and sound forge is Set to 48Khz. Make sure the sample rate on the DAT tape matches whatever you have selected in the Record window of Sound Forge. If they do not match this will cause a pitch difference between the source and what get's recorded in Sound Forge.

Good luck,
Brian Franz

Subject:RE: Pitch different in source and recorded file

Reply by: BrentA

Date:8/20/2001 3:54:37 AM

>> How do I fix this?

Like Brian said, verify that Sound Forge is set to whatever playback rate your DAT is operating at. Then sync your card to your DAT clock. If it's not obvious where to do this, have a look in Control Panel | System. For example, this is where my clock settings are located (maybe yours are too):

Open Control Panel
Click System icon
Click Device Manager Tab
Expand Sound Video and Game Controllers
Click Layla By Echo (my sound card)
Click Clocks Tab