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Posted by Pinokio on Feb-28-2007 01:46:

Clipping When Recording?

I use Sound Forge for recording my CDJ Mixes.

I have
2 CDJ 200
1 Vestax PCV-275 Mixer
M-Audio Ozonic (Wich is used as my soundcard).

The strange thing is that my Mixer Master LEvel it's in green, and on soudnforge it seems to be clipping (Red)?

Is there something wrong, how can I know if it�s really clipping or not?

Thanks

Posted by andydavey on Feb-28-2007 10:29:

If Soundforge is going into the red then it's clipping. You can adjust the recording level on your PC as well - go into your Ozonic's mixer application and turn it down there until it doesn't clip. Also make sure you've gone into the Ozonic's line inputs and not the mic.

Andy

Posted by Pinokio on Feb-28-2007 17:26:

quote:
Originally posted by andydavey
If Soundforge is going into the red then it's clipping. You can adjust the recording level on your PC as well - go into your Ozonic's mixer application and turn it down there until it doesn't clip. Also make sure you've gone into the Ozonic's line inputs and not the mic.

Andy

I've turned down the volume on on the Ozonic'z Mixer apliccaton, and it doesn't affect the clipping at all.

The Ozonic Only have
Analog Inputs(Unbalanced Inputs) that's where my mixer is connected
and it also have an instrument input.

Posted by andydavey on Mar-01-2007 10:47:

You definitely turned down the Ozonic's input and not output level? It's strange that you couldn't get it not to clip when you did that. All you can do then is run the master out of your mixer a bit lower really...

Posted by Stu Cox on Mar-01-2007 15:15:

One really crap thing about a lot of soundcards (an other PC audio interfaces) is they don't have any headroom - i.e. they clip bang on 0dB, when most audio equipment (probably your mixer included) has at least 6dB of headroom.

I always record in peaking at -6db at the most then normalise up after I've recorded... yeah you lose a bit of dynamic range but it's better than clipping.

But as Andy says, turning down the input voltage should stop it from clipping if your mixer isn't hitting red - with a PCV-275 I think it's safe to say that 0dB on the VU meter will be pretty accurate.

Posted by OMNIFEX on Mar-02-2007 11:02:

quote:
Originally posted by Stu Cox
One really crap thing about a lot of soundcards (an other PC audio interfaces) is they don't have any headroom - i.e. they clip bang on 0dB, when most audio equipment (probably your mixer included) has at least 6dB of headroom.

The whole idea is to record without the master output of the mixer (Ex. REC Out). The Master is actually a Pre-Amplifier to feed xyz amount of dBs to an amplifier.

An amplifier's input signal is higher than a line input signal. So, the best way is to either don't record with the Master, or reduce the Master levels accordingly.