STKStifKarp — STKStifKarp is a plucked stiff string instrument.
STKStifKarp is a plucked stiff string instrument. It a simple plucked string algorithm (Karplus Strong) with enhancements, including string stiffness and pluck position controls. The stiffness is modeled with allpass filters.
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 3 controller numbers and values that work for STKStifKarp are:
kc, kv -- 4, pickup position.
kc, kv -- 11, string sustain.
kc, kv -- 1, string stretch.
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Note |
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The code for this opcode is taken directly from the StifKarp 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 STKStifKarp opcode. It uses the file STKStifKarp.csd.
Example 786. Example of the STKStifKarp 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 STKStifKarp.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 instr 1 ifrq = p4 kpos line p6, p3, p7 ;Pickup Position ksus = p5 ;String Sustain asig STKStifKarp cpspch(p4), 1, 4, kpos, 11, ksus, 1, 10 outs asig, asig endin </CsInstruments> <CsScore> i 1 0 2 5.00 0 100 100 i 1 + 40 5.00 127 1 127 i 1 10 32 5.00 127 1 10 e </CsScore> </CsoundSynthesizer>