STKBandedWG
Prev | Orchestra Opcodes and Operators | Next

## STKBandedWG

STKBandedWG — STKBandedWG uses banded waveguide techniques to model a variety of sounds.

## Description

This opcode uses banded waveguide techniques to model a variety of sounds, including bowed bars, glasses, and bowls.

## Syntax

    asignal STKBandedWG ifrequency, iamplitude, [kc1, kv1[, kc2, kv2[, kc3, kv3[, kc4, kv4[, kc5, kv5[, kc6, kv6[, kc7, kv7]]]]]]]

## Initialization

ifrequency -- Frequency of note played, in Hertz.

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

## Performance

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 STKBandedWG are:

- kc, kv -- 2, pressure of bow.

- kc, kv -- 4, motion of bow.

- kc, kv -- 11, speed of low-frequency oscillator.

- kc, kv -- 1, depth of low-frequency oscillator.

- kc, kv -- 128, velocity of bow.

- kc, kv -- 64, striking of bow.

- kc, kv -- 16, instrument presets (0 = uniform bar, 1 = tuned bar, 2 = glass harmonica, 3 = Tibetan bowl).

| Note
The code for this opcode is taken directly from the BandedWG 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

## Examples

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

Example 765. Example of the STKBandedWG 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 STKBandedWG.wav -W ;;; for file output any platform
    </CsOptions>
    <CsInstruments>

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

    instr 1

    ifrq	=	p4
    kblw	line	p5, p3, p6
    kenv	line	1, p3, 0

    asig	STKBandedWG cpspch(ifrq), 1, 2, p5, 4, 100, 11, 0, 1, 0, 64, 100, 128, 120, 16, 2
    asig	=	asig * kenv				;envelope
    	outs asig, asig
    endin

    </CsInstruments>
    <CsScore>

    i 1 0 10 5.00 100 0
    i 1 2  8 6.03 10 .
    i 1 5  5 7.05 50 127

    e
    </CsScore>
    </CsoundSynthesizer>

## Credits

Author: Michael Gogins (after Georg Essl)
Irreducible Productions
New York, NY

New in Csound version 5.11

Prev | Up | Next
stix | Home | STKBeeThree