STKSimple
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## STKSimple

STKSimple — STKSimple is a wavetable/noise instrument.

## Description

Plugin opcode in stkopd.

STKSimple is a wavetable/noise instrument. It combines a looped wave, a noise source, a biquad resonance filter, a one-pole filter, and an ADSR envelope to create some interesting sounds.

## Syntax

    asignal STKSimple ifrequency, iamplitude, [kpos, kv1[, kcross, kv2[, kenv, kv3[, kgain, kv4]]]]

## Initialization

ifrequency -- Frequency of note played, in Hertz.

iamplitude -- Amplitude of note played (range 0-1).

## Performance

kpos -- controller 2, position of filter pole. Value range of kv1 is 0-127.

kcross -- controller 4, noise/pitched cross-fade. Value range of kv2 is 0-127.

kenv -- controller 11, rate of envelope. Value range of kv3 is 0-127.

kgain -- controller 128, gain. Value range of kv4 is 0-127.

| Note

The code for this opcode is taken directly from the Simple 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

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). Both the controller numbers and the controller values are krate variables. However, during a performance, normally the controller numbers stay fixed while the corresponding controller values may change at any time. The order of the controller pair is arbitrary, as long as they are after iamplitude. Also, it is not needed that all controller pairs are used.

## Examples

Here is an example of the STKSimple opcode. It uses the file STKSimple.csd.

Example 991. Example of the STKSimple opcode.

    <CsoundSynthesizer>
    <CsOptions>
    ; Select audio/midi flags here according to platform
    -odac     ;;;realtime audio out
    ;-iadc    ;;;uncomment -iadc if RT audio input is needed too
    ; For Non-realtime ouput leave only the line below:
    ; -o STKSimple.wav -W ;;; for file output any platform
    </CsOptions>
    <CsInstruments>

    sr = 44100
    ksmps = 32
    nchnls = 2
    0dbfs  = 1

    instr 1

    ifrq	=	p4
    kv1	line	p5, p3, p6				;Filter Pole Position
    kv2	line	20, p3, 90				;Noise/Pitched Cross-Fade

    asig	STKSimple cpspch(p4), 1, 2, kv1, 4, kv2, 11, 10, 128, 120
    	outs asig, asig
    endin

    </CsInstruments>
    <CsScore>

    i 1 0 5 7.00 100 0
    i 1 + .  7.05 10 127
    i 1 + .  8.03 100 0
    i 1 + .  5.00 10 10
    e
    </CsScore>
    </CsoundSynthesizer>

## See Also

STKClarinet.

## Credits

Author: Michael Gogins (after Perry Cook)
Irreducible Productions
New York, NY

New in Csound version 5.11

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