In terms of MIDI controls, it means the alterations of the duration of any group of MIDI data in the time domain. A whole sequence can be accelerated or delayed by means of tempo adjustments on a ’conductor track’ that imposes its law on all data uniformly. But when certain channels must be independently time-adjusted, or when information concerning only one type of data (like pitch-bend, panoramics or MIDI-volume) must be altered, then a device called ’timescale’ can be called to perform this without affecting the information otherwise not selected. (Source - Rodolfo Caesar (1992). The Composition of Electroacoustic Music. PhD Thesis, University of East Anglia.)
See also:
MIDI, Sequencing, Time Compression, Time-stretchingBibliography:
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