I’m using Windows 8 and Audacity 2.0.6. I used the .exe installer.
I need to identify changes in voice audio by comparing the original with a version containing changes. They are identical except for some responses inserted into a recording of the original audio. I understand I can do something to merge the original and changed versions so whatever is in the original is cancelled out and only the changes remain. Does anyone know anything about that?
I know it’s a lot more entertaining than people think.
Import both tracks into Audacity and they will appear one above the other and play at the same time unless you stop them with the MUTE or SOLO buttons. Select one track only by clicking just above MUTE. Effect > Invert.
Now it gets fun. Almost certainly they will not cancel because if one was edited without the other, they will be different. Probably seriously different. It’s your job to adjust out the differences. You can use the volume slider to the left to adjust out differences in volume, but I believe you’re stuck with The Time Shift Tool (two sideways black arrows) to adjust out overall timing differences, and you can even have duration differences. You can get rid of those with Effect > Change Speed.
Many, many thanks. I can’t try it out until we get a recording to experiment with this Saturday. I will try it then, however. I’ll let you know how it turns out.