expseg (Csound opcode)
kr expseg ia, idur1, ib[, idur2, ic[...]] ar expseg ia, idur1, ib[, idur2, ic[...]]
ia: Starting value. Zero is illegal
ib, ic, etc.: Value after dur1 seconds, etc. Must be non-zero and must agree in sign with ia.
idur1: Duration in seconds of first segment. A zero or negative value will cause all initialization to be skipped.
ib, ic, etc.: Value after dur1 seconds, etc. Must be non-zero and must agree in sign with ia.
idur1: Duration in seconds of first segment. A zero or negative value will cause all initialization to be skipped.
While
expseg connects the points with exponential curves, linseg connects those with straight lines.
Graphical representation
The following simple orchester and score files can be used to show how an expseg curve looks like.
sr = 44100 kr = 4410 nchnls = 1 instr 1 asig expseg 10000, 0.2, 2000, 0.2, 20000, 0.2, 4000, 0.2, 30000, 0.2, 1 out asig endin
i1 0 1
If run through csound, this progression is achieved:
Instruments
This opcode is used for the following instruments:
Other Csound opcodes.