STKFlute
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## STKFlute

STKFlute — STKFlute uses a simple flute physical model.

## Description

Plugin opcode in stkopd. This opcode is part of the plugin repository and has to be installed separately. The plugin repository can be found here: https://github.com/csound/plugins

STKFlute uses a simple flute physical model. The jet model uses a polynomial, a la Cook.

## Syntax

    asignal STKFlute ifrequency, iamplitude, [kjet, kv1[, knoise, kv2[, klfo, kv3[, klfodepth, kv4[, kbreath, kv5]]]]]

## Initialization

ifrequency -- Frequency of note played, in Hertz.

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

## Performance

kjet -- controller 2, jet delay. Value range of kv1 is 0-127.

knoise -- controller 4, gain of noise. Value range of kv2 is 0-127.

klfo -- controller 11, speed of low-frequency oscillator. Value range of kv3 is 0-127.

klfodepth -- controller 1, depth of low-frequency oscillator. Value range of kv4 is 0-127.

kbreath -- controller 128, breath pressure. Value range of kv5 is 0-127.

| Note

The code for this opcode is taken directly from the Flute 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 STKFlute opcode. It uses the file STKFlute.csd.

Example 1021. Example of the STKFlute 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 STKFlute.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				;jet delay
    kv4	line	0, p3, 100				;vibrato depth

    asig	STKFlute cpspch(ifrq), 1, 2, kv1, 4, 100, 11, 100, 1, kv4, 128, 100
    	outs asig, asig
    endin

    </CsInstruments>
    <CsScore>
    i 1 0 5 8.00 0 0
    i 1 7 3 9.00 20 120
    e
    </CsScore>
    </CsoundSynthesizer>

## See also

STK Opcodes

## Credits

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

New in Csound version 5.11

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