wrap — Wraps-around the signal that exceeds the low and high thresholds.
xsig -- input signal
klow -- low threshold
khigh -- high threshold
wrap wraps-around the signal that exceeds the low and high thresholds.
This opcode is useful in several situations, such as table indexing or for clipping and modeling a-rate, i-rate or k-rate signals. wrap is also useful for wrap-around of table data when the maximum index is not a power of two (see table and tablei). Another use of wrap is in cyclical event repeating, with arbitrary cycle length.
Here is an example of the wrap opcode. It uses the file wrap.csd.
Example 1216. Example of the wrap opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -odac ;;;realtime audio out ;-iadc ;;;uncomment -iadc if realtime audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o wrap.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 0dbfs = 1 nchnls = 2 instr 1 ; Limit / Mirror / Wrap igain = p4 ;gain ilevl1 = p5 ; + level ilevl2 = p6 ; - level imode = p7 ;1 = limit, 2 = mirror, 3 = wrap ain soundin "fox.wav" ain = ain*igain if imode = 1 goto limit if imode = 2 goto mirror asig wrap ain, ilevl2, ilevl1 goto outsignal limit: asig limit ain, ilevl2, ilevl1 goto outsignal mirror: asig mirror ain, ilevl2, ilevl1 outsignal: outs asig*.5, asig*.5 ;mind your speakers endin </CsInstruments> <CsScore> ; Gain +Levl -Levl Mode i1 0 3 4.00 .25 -1.00 1 ;limit i1 4 3 4.00 .25 -1.00 2 ;mirror i1 8 3 4.00 .25 -1.00 3 ;wrap e </CsScore> </CsoundSynthesizer>