Off Axis Waveforms -Sound Forge - PC - MAGIX Community Forums Archive

Subject:Off Axis Waveforms Posted by: JimMSG Date:3/13/2007 12:53:33 AM Is there a way to fix off axis waveforms? I have a couple pieces of audio where the center of the waveform is not - inf. It is at -9.8 instead. Is there a way to correct this?
Subject:RE: Off Axis Waveforms Reply by: garrigus Date:3/13/2007 6:08:11 AM Hi Jim, It might be DC Offset... select all the data and process it with the Process > DC Offset function. Scott -- Scott R. Garrigus - Author of Cakewalk, Sound Forge 6, 7/8 and SONAR 1, 2, 3, 4, 5 Power books. Get Sonar 6 Power & Sound Forge 8 Power - Today! http://www.garrigus.com/ Publisher of DigiFreq. Win a free Absynth 3 or Kontakt 2 DVD Tutorial and learn cool music technology tips and techniques by getting a FREE subscription to DigiFreq... over 20,000 readers can't be wrong! Go to: http://www.digifreq.com/digifreq/
Subject:RE: Off Axis Waveforms Reply by: MarkWWWW Date:3/13/2007 6:15:15 AM This is known as a DC Offset. In engineering terms, the AC signal (your audio) is displaced (offset) from the centre (0V DC) position. It is easy to fix in Sound Forge - just choose Process\|DC Offset... select "Automatically detect and remove" and click on OK. Mark.
Subject:RE: Off Axis Waveforms Reply by: JimMSG Date:3/14/2007 12:57:39 PM Thank you that fixed it.
Subject:RE: Off Axis Waveforms Reply by: Chienworks Date:3/14/2007 3:02:59 PM One thing to watch out for, especially if your axis is that far off, is that you don't drive the signal into clipping when correcting the offset. We have one sound card we use that regularly records the left channel at about -22db above center. Often though, the signal is already near 0dB beneath the center line. So, if i correct for the offset, it drives the bottom peaks into clipping. I have to reduce the volume about 1 or 2dB first before fixing the offset. With yours at about the -9.8 range, you could very easily drive the peaks beyond clipping if your signal is strong enough.

Subject:Off Axis Waveforms

Posted by: JimMSG

Date:3/13/2007 12:53:33 AM

Is there a way to fix off axis waveforms? I have a couple pieces of audio where the center of the waveform is not - inf. It is at -9.8 instead. Is there a way to correct this?

Subject:RE: Off Axis Waveforms

Reply by: garrigus

Date:3/13/2007 6:08:11 AM

Hi Jim,

It might be DC Offset... select all the data and process it with the Process > DC Offset function.

Scott

--
Scott R. Garrigus - Author of Cakewalk, Sound Forge 6, 7/8 and SONAR 1, 2, 3, 4, 5 Power books.
** Get Sonar 6 Power & Sound Forge 8 Power - Today! **
http://www.garrigus.com/

Publisher of DigiFreq. Win a free Absynth 3 or Kontakt 2 DVD Tutorial and learn cool music technology tips and techniques by getting a FREE subscription to DigiFreq... over 20,000 readers can't be wrong! Go to:
http://www.digifreq.com/digifreq/

Subject:RE: Off Axis Waveforms

Reply by: MarkWWWW

Date:3/13/2007 6:15:15 AM

This is known as a DC Offset.

In engineering terms, the AC signal (your audio) is displaced (offset) from the centre (0V DC) position.

It is easy to fix in Sound Forge - just choose Process|DC Offset... select "Automatically detect and remove" and click on OK.

Mark.

Subject:RE: Off Axis Waveforms

Reply by: JimMSG

Date:3/14/2007 12:57:39 PM

Thank you that fixed it.

Subject:RE: Off Axis Waveforms

Reply by: Chienworks

Date:3/14/2007 3:02:59 PM

One thing to watch out for, especially if your axis is that far off, is that you don't drive the signal into clipping when correcting the offset.

We have one sound card we use that regularly records the left channel at about -22db above center. Often though, the signal is already near 0dB beneath the center line. So, if i correct for the offset, it drives the bottom peaks into clipping. I have to reduce the volume about 1 or 2dB first before fixing the offset.

With yours at about the -9.8 range, you could very easily drive the peaks beyond clipping if your signal is strong enough.