STKRhodey — STK Fender Rhodes-like electric piano FM synthesis instrument.
STK Fender Rhodes-like electric piano FM synthesis instrument.
This opcode implements an instrument based on two simple FM Pairs summed together, also referred to as algorithm 5 of the Yamaha TX81Z. It simulates the sound of a Rhodes electric piano, and some related sounds.
asignal STKRhodey ifrequency, iamplitude, [kc1, kv1[, kc2, kv2[, kc3, kv3[, kc4, kv4[, kc5, kv5]]]]]
ifrequency -- Frequency of note played, in Hertz.
iamplitude -- Amplitude of note played (range 0-1).
kc1, kv1, kc2, kv2, kc3, kv3, kc4, kv4, kc5, kv5, kc6, kv6, kc7, kv7, kc8, kv8 -- Up to 8 optional k-rate controller pairs for the STK opcodes. Each controller pair consists of a controller number (kc) followed by a controller value (kv). The 5 controller numbers and values that work for STKRhodey are:
kc, kv -- 2, modulator index 1.
kc, kv -- 4, crossfade of outputs.
kc, kv -- 11, speed of low-frequency oscillator.
kc, kv -- 1, depth of low-frequency oscillator.
kc, kv -- 128, ADSR 2 and 4 target.
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The code for this opcode is taken directly from the Rhodey class in the Synthesis Toolkit in C++ by Perry R. Cook and Gary P. Scavone. More on the STK classes can be found here: https://ccrma.stanford.edu/software/stk/classes.html |
Here is an example of the STKRhodey opcode. It uses the file STKRhodey.csd, and fwavblnk.aiff.
Example 568. Example of the STKRhodey opcode.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -odac ;;;RT audio out ;-iadc ;;;uncomment -iadc if RT audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o STKWurley.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 instr 1 ifrq = p4 kndx line p5, p3, p6 ;(FM) Modulator Index One asig STKRhodey cpspch(p4), 1, 2, kndx, 4, 10, 11, 100, 1, 3, 128, 75 outs asig, asig endin </CsInstruments> <CsScore> i 1 0 .5 7.00 75 0 20 i 1 + . 8.00 120 0 20 i 1 + 1 6.00 50 120 20 i 1 + 4 8.00 10 10 127 e </CsScore> </CsoundSynthesizer>