Comments

Rednroll wrote on 11/21/2003, 1:50 PM
Sounds like a digital word clock issue. Do you have digital inputs? Make sure the clock isn't set to external. The external clock is probably receiving a clock signal of 48Khz, while your file properties is at 44.1Khz. Make sure your clock is set to internal for playback. You also might have to open your original recordings in an editor like Sound Forge and change the sampling frequency property value, without resampling the actual file.
whr wrote on 11/21/2003, 5:09 PM
Thanks Rednroll. I can identify with what your saying, however, I'm not sure I know how to check the clock. My sound card is a gadgetlabs 824 and I am using win 98se. Is ther anyway I can resample the file withing vegas?
Rednroll wrote on 11/22/2003, 3:32 PM
I'm not familiar with the gadget labs card you have. The way this usually works is that a sound card will install it's driver and use the windows mixer section and windows will expose those features on the sound within the windows mixer section. OR the sound card will install it's own mixer section. What you need to do is go into that mixer section and select the digital input/output to the appropriate word clock. For me I have Echo Gina cards and they install their own mixer section. I would go into that mixer sectin and there is a clock setting of either "internal' or "s/pdif".

Here's a general rule of thumb to go by and is most likely the reason you're experiencing the problem you have.

ALWAYS SET THE CLOCK TO THE SOURCE OF WHERE THE AUDIO IS COMING FROM.

1. When recording from an external device into the digital input, set the digital input on your sound card to "sp/dir", "external", or "AES". These are the same thing just different terminology depending on your sound card. For example if you're recording from an external CD player,or receiving audio from the digital out of a mixing board. Then the CD player/mixer is using it's internal word clock to playback. Your sound card needs to be using the same word clock, so you would set it to "external", so that it is receiving the word clock being generated from the CD player.mixer.

2. If you are playing back from your PC and transfering the audio to an external device, like a recordable CD player, DAT, or digital mixing board, then you need to set the word clock to "internal". That's because now the source of the audio is your PC and you need to use the internal word clock of the PC. Your CD recorder/mixer's clock setting needs to be set to "external" to receive the word clock from your PC.

I haven't ever had to fix this problem using Vegas, Sound Forge is actually better suited for this. Vegas automatically resamples the audio to the sampling rate you have defined in the Vegas project. Sound Forge is better for this because, you really don't need to "resample" the audio, you just need to change the "properties" of the set sampling rate of the files. In your problem the "properties" probably say it's a 48Khz sampling rate, where it should be 44.1Khz. Therefore you just need to change the properties to 44.1Khz and it will playback using the correct sampling rate.

Here's a way you could achieve a similar result within Vegas if you don't have sound forge.
1. Place the file in a track within Vegas
2. Right click on the event and select "properties"
3. Got Timestretch/Pitch and set the "Method" to "Change Pitch/Preserve Length"
4. Start to lower the "Cents" setting until the file starts to playback at the correct pitch.
5. Write this value down, and do the same thing with the same value into any other tracks you have.

Another possible problem you might have is that the Vegas project properties is set at 44.1Khz, but the word clock is set to external, receiving a 48Khz sampling rate word clock. Again, another problem due to not abiding by the rule I outlined above.

This should help you find where the problem occured, let us know what you find,
Red
Cold wrote on 11/24/2003, 4:16 PM
The Gadget labs card have a small applet that is installed in the control pannel, go to the control pannel, double click the gadget labs icon and check the clock speed. Make sure this matches your vegas settings.
Steve S.