inch — Reads from numbered channels in an external audio signal or stream.
ain1, ... - input audio signals
kchan1,... - channel numbers
inch reads from numbered channels determined by the corresponding kchan into the associated ain. If the command-line -i flag is set, sound is read continuously from the audio input stream (e.g. stdin or a soundfile). inch can also be used to receive audio in realtime from the audio interface using -iadc.
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The highest number for kchan available for use with inch depends on nchnls_i. If kchan is greater than nchnls_i, ain will be silent. Note that inch will give a warning but not an error in this case. |
Here is an example of the inch opcode. It uses the file inch.csd.
Example 394. Example of the inch opcode.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -odac -idac ;;;realtime audio I/O ; For Non-realtime ouput leave only the line below: ; inch.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 instr 1 ;nchnls channels in, two channels out ain1, ainr inch 1, 2 ;grab your mic and sing adel linseg 0, p3*.5, 0.02, p3*.5, 0 ;max delay time = 20ms aoutl flanger ain1, adel, .7 aoutr flanger ain1, adel*2, .8 fout "in_ch.wav", 14, aoutl, aoutr ;write to stereo file, outs aoutl, aoutr ;16 bits with header endin </CsInstruments> <CsScore> i 1 0 10 e </CsScore> </CsoundSynthesizer>