THE ART OF DIGITAL AUDIO RECORDING
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SCREENSHOT 4.28 A time compression/ expansion menu
to make, in order to relieve the computer’s processing power of analyzing each element during playback.
Compressing or expanding melodic material All of the techniques described above in regard to drum and percussion loops also applies to melodic material. Often, melodic loops, such as a two-bar bass line, are used along with rhythmic loops and their times can be adjusted to a tempo using any of the techniques described above. Sometimes melodic material is expanded for different reasons. You may find a particular note to have been played shorter than you wish—perhaps it stops a quarter note short of the next note and you want it to sustain to the next note. You could expand the note in question by the small amount needed for it to last until the next note. Quality issues may be more pronounced in compressing or expanding melodic material. The delicate timbres of acoustic instruments may be most noticeably altered when compressed or expanded. The algorithms used for
SCREENSHOT 4.29 Before and after expansion to fill a space