Convert linear pan amplitude to constant power pan amplitude.
powerpan = boost(linpan)
boost accepts a pan value (0.0-1.0) and returns the amplitude scaling factor necessary to avoid a “hole in the middle” for a panned note. In other words, for static-panned notes, it lets you convert the linear panning law used by most instruments into a constant-power pan with sqrt taper.
Examples of values returned by boost:
boost(0) => 1
boost(1) => 1
boost(0.25) => 1.265
boost(0.5) => 1.414
pan = 0.53
powcorrection = boost(pan)
STEREO(0, 0, 3.4, 1.0 * powcorrection, pan)
ampdb, dbamp, cpsmidi, cpslet, cpsoct, cpspch, midipch, octcps, octlet, octmidi, octpch, pchcps, pchlet, pchmidi, pchoct