oscil3 — A simple oscillator with cubic interpolation.
Table ifn is incrementally sampled modulo the table length and the value obtained is multiplied by amp.
ifn -- function table number. Requires a wrap-around guard point.
iphs (optional) -- initial phase of sampling, expressed as a fraction of a cycle (0 to 1). A negative value will cause phase initialization to be skipped. The default value is 0.
kamp, xamp -- amplitude
kcps, xcps -- frequency in cycles per second.
oscil3 is experimental, and is identical to oscili, except that it uses cubic interpolation. (New in Csound version 3.50.)
Here is an example of the oscil3 opcode. It uses the file oscil3.csd.
Example 292. Example of the oscil3 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 ; Audio out Audio in No messages -odac -iadc -d ;;;RT audio I/O ; For Non-realtime ouput leave only the line below: ; -o oscil3.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Initialize the global variables. sr = 44100 kr = 4410 ksmps = 10 nchnls = 1 ; Instrument #1 - a basic oscillator. instr 1 kamp = 10000 kcps = 220 ifn = 1 a1 oscil kamp, kcps, ifn out a1 endin ; Instrument #2 - the basic oscillator with cubic interpolation. instr 2 kamp = 10000 kcps = 220 ifn = 1 a1 oscil3 kamp, kcps, ifn out a1 endin </CsInstruments> <CsScore> ; Table #1, a sine wave table with a small amount of data. f 1 0 32 10 0 1 ; Play Instrument #1, the basic oscillator, for ; two seconds. This should sound relatively rough. i 1 0 2 ; Play Instrument #2, the cubic interpolated oscillator, for ; two seconds. This should sound relatively smooth. i 2 2 2 e </CsScore> </CsoundSynthesizer>