Convert octave.pitch-class (oct.pc) to MIDI note number.
midinotenum = midipch(octpcval)
midipch returns a corresponding MIDI note number for a given octave.pitch-class value. oct.pc is a way to use standard “western” keyboard notes without having to look up the pitch-frequency conversion. It works by arbitrarily assigning the octave of middle C to 8.00. Any semitone above middle C is added as a “hundredth” to the left of the decimal point, i.e. 8.01 is the C# just above middle C, 8.02 is the D, 8.03 is the D# (Eb), etc. up to 8.12, which is equivalent to 9.00. 9.01 is then the C# one octave and a semitone above midddle C.
Although the MIDI specification allows only integers as MIDI note numbers, RTcmix lets you specify notes “between” 12-tone equal-tempered semitones by using decimal numbers as MIDI note numbers. For example, 60.5 is a quarter tone above middle C.
NOTE: With the exception of boost, The RTcmix conversion functions follow a pattern. The command isdivided into two halves, the one closest to the argument represent the format of the argument, and the one closest to the assignment represents the format to be returned. For example, “cpspch” is divided into “cps” and “pch”. The argument is in oct.pc form (“pch”) and the return value will be in cps (“cps”).
The various format specifiers are:
amp = linear amplitude (16-bit, 0-32767)
cps = cycles per second (Hz)
db = decibels
midi = MIDI note number (60 is middle C)
oct = linear octaves (8.5 is halfway between octave 8.00 [middle C] and 9.00)
pch = octave.pitch-class (oct.pc; 8.00 is middle C, 8.02 is D, 8.12 = 9.00 = C above middle C)
let = note-letter specification ("C4" is middle C, "C#4" is C-sharp above middle C,
"Gb5" is G-flat the octave above middle C octave. [see pitch-reps for more info])
mnote = midipch(8.10)
ampdb, boost, dbamp, cpslet, cpsmidi, cpsoct, cpspch, octcps, octlet, octmidi, octpch, pchcps, pchlet, pchmidi, pchoct