Adobe AUDITION 1.5 - Manual (Page 277)

269 ADOBE AUDITION 1.5
User Guide
In-phase waves reinforce each other.
Sometimes the peaks of one waveform match up with the troughs of another. The peaks
and troughs will cancel each other out, resulting in no waveform at all. Such waveforms
are said to be 180 degrees out of phase.
Out-of-phase waves cancel each other out.
In all other cases, waves are out of phase by some amount. This results in a waveform that
is more complex than either of the original waveforms; continuing to add waves makes a
more and more complicated waveform. Keep in mind, however, that a single instrument
can create extremely complex waves because of the unique structure of the instrument; a
violin and a trumpet sound different even when playing the same note. When you see
music, voice, noise, and other complicated sounds represented by a waveform, you see all
the waveforms from each sound added together.
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