STKSaxofony — STKSaxofony is a faux conical bore reed instrument.
STKSaxofony is a faux conical bore reed instrument. This opcode uses a "hybrid" digital waveguide instrument that can generate a variety of wind-like sounds. It has also been referred to as the "blowed string" model. The waveguide section is essentially that of a string, with one rigid and one lossy termination. The non-linear function is a reed table. The string can be "blown" at any point between the terminations, though just as with strings, it is impossible to excite the system at either end. If the excitation is placed at the string mid-point, the sound is that of a clarinet. At points closer to the "bridge", the sound is closer to that of a saxophone.
asignal STKSaxofony ifrequency, iamplitude, [kc1, kv1[, kc2, kv2[, kc3, kv3[, kc4, kv4[, kc5, kv5[, kc6, kv6[, kc7, kv7]]]]]]]
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 7 controller numbers and values that work for STKSaxofony are:
kc, kv -- 2, stiffness of reed.
kc, kv -- 26, reed aperture.
kc, kv -- 11, blow position.
kc, kv -- 4, noise gain.
kc, kv -- 29, speed of low-frequency oscillator.
kc, kv -- 1, depth of low-frequency oscillator.
kc, kv -- 128, breath pressure.
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The code for this opcode is taken directly from the Saxofony 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 STKSaxofony opcode. It uses the file STKSaxofony.csd.
Example 816. Example of the STKSaxofony 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 STKSaxofony.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 instr 1 ifreq = p4 kstiff = p5 ;reed stiffness kblw line p6, p3, p7 ;blow position kvib line 0, p3, 127 ;vibrato speed asig STKSaxofony cpspch(p4), 1, 2, kstiff, 4, 100, 26, 70, 11, kblw, 1, kvib, 29, 100 asig = asig * .5 ;too loud outs asig, asig endin </CsInstruments> <CsScore> i 1 0 3 6.00 30 100 10 i 1 + . 8.00 30 100 100 i 1 + . 7.00 90 127 30 e </CsScore> </CsoundSynthesizer>