vlinseg — Vectorial envelope generator
ifnout - number of table hosting output vectorial signal
ifn1 - starting vector
ifn2,ifn3,etc. - vector after idurx seconds
idur1 - duration in seconds of first segment.
dur2, idur3, etc. - duration in seconds of subsequent segments.
ielements - number of elements of vectors.
These opcodes are similar to linseg and expseg, but operate with vectorial signals instead of with scalar signals.
Output is a vectorial control signal hosted by ifnout (that must be previously allocated), while each break-point of the envelope is actually a vector of values. All break-points must contain the same number of elements (ielements).
All these operators are designed to be used together with other opcodes that operate with vectorial signals such as bmscan, vcella, adsynt, adsynt2 etc.
Here is an example of the vlinseg opcode. It uses the files vlinseg.csd.
Example 495. Example of the vlinseg opcode.
<CsoundSynthesizer> <CsOptions> -odac -B441 -b441 </CsOptions> <CsInstruments> sr=44100 ksmps=10 nchnls=2 gilen init 32 gitable1 ftgen 0, 0, gilen, 10, 1 gitable2 ftgen 0, 0, gilen, 10, 1 gitable3 ftgen 0, 0, gilen, -7, 30, gilen, 35 gitable4 ftgen 0, 0, gilen, -7, 400, gilen, 450 gitable5 ftgen 0, 0, gilen, -7, 5000, gilen, 5500 instr 1 vcopy gitable2, gitable1, gilen turnoff endin instr 2 vlinseg gitable2, 16, gitable3, 2, gitable4, 2, gitable5 endin instr 3 kcount init 0 if kcount < 16 then kval table kcount, gitable2 printk 0,kval kcount = kcount +1 else turnoff endif endin </CsInstruments> <CsScore> i1 0 1 s i2 0 10 i3 0 1 i3 1 1 i3 1.5 1 i3 2 1 i3 2.5 1 i3 3 1 i3 3.5 1 i3 4 1 i3 4.5 1 </CsScore> </CsoundSynthesizer>