Michael G is right. Just normalizing will not make all the clips have the same apparent volume. For instance, if a file has a loud noise like a cough or a clap, that sound peaks much higher than the normal audio. Let’s say your average audio peaks to -12 and the clap goes to -3. In that case normalizing will raise the volume of the entire track about 3 db (so the loudest sound doesn’t clip over 0). Now, let’s say another clip has no coughs or claps and its average audio stays around -12. Then this clip’s gain will be increased about 12 db or 9 db more than the other clip. Obviously, this clip will sound much louder than the first. The only way to avoid this would be to use an audio compression plugin to restrict the peaks. You might be able to batch process that, but a compression setting that works with one clip might not sound good with another.
John
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