FormantTable

Extension

Description

Returns a set of frequencies+resonances+amplitudes for a set of 5 bandpass filters, useful for emulating the main 5 formants of a vocal tract. To see the available voice types run this line:FormantTable.keys

Class Methods

.keys

.get

.at

.rand

Examples

(by Eric Skogen)// first boot the server s.boot; // Saw freq is controlled by mouse X position // BBandPass filter is controlled by // FormantTable data (frequencies, resonances, amplitudes) ( SynthDef(\formantVoice, { arg f = #[ 400, 750, 2400, 2600, 2900 ], a = #[ 1, 0.28183829312645, 0.089125093813375, 0.1, 0.01 ], q = #[ 0.1, 0.10666666666667, 0.041666666666667, 0.046153846153846, 0.041379310344828 ]; var scale = [0, 2, 4, 7, 9]; // pentatonic major var scaleBuf = LocalBuf(scale.size, 1).set(scale); var degree = Index.kr(scaleBuf, MouseX.kr(0, BufFrames.kr(scaleBuf))); var vibrato = SinOsc.kr(6, mul:4); var base = 4 * 12; var in = Saw.ar(((degree + base).midicps + vibrato).lag(0.3)); Out.ar(0, Mix.new(BBandPass.ar(in, f, q) * a).dup); }).send(s); ) // create a menu of the FormantTable options for preview ( var voices = FormantTable.keys.asArray; voices.sort; // start an instance of the synth #f, a, q = FormantTable.get( voices.first ); x = Synth(\formantVoice, [\f, f, \a, a, \q, q]); w = Window("FormantTable Browser", Rect(Window.screenBounds.width/2 - 150, Window.screenBounds.height/2 - 30, 300, 60)); StaticText(w, Rect(0, 5, w.view.bounds.width, 20)) .font_(Font("Helvetica", 11)) .string_("Move mouse left/right to change pitch") .align_(\center); PopUpMenu(w, w.view.bounds.insetBy(15, 20).moveBy(0, 10)) .items_(voices) .action_({ |v| // change the data based on user action #f, a, q = FormantTable.get( v.item ); x.setn(\f, f); x.setn(\a, a); x.setn(\q, q); }); w.onClose_({ x.free }); w.front; ) // A laughter generator // NB mac-only at the moment, sorry ( #f, a, q = FormantTable.get(\altoA); e = Env( [ 1.6315789222717, 2.8684210777283, 0, 1.1526317596436, 0, 0.63157892227173, 0, 0, 0.39473664164831, 0.41710549016785, 0, 0.33685091589462, 0.3538348548878, 0, 0.10526323318481, 0 ], [ 0.099179289557717, 0.029608596454967, 0.070896452123469, 0.015656579624523, 0.045265132730657, 0.08636364069852, 0.027344267630401, 0.021196740851856, 0.025568173912275, 0.020519098486223, 0.029819674626466, 0.025645296259773, 0.057419430367461, 0.18465909090909, 0.16357317837802 ] ); w = Window("Laugh Editor", Rect(200,200,400,300)); v = SCEnvelopeEdit(w, w.view.bounds.moveBy(20,20).resizeBy(-40,-140), e, 20).resize_(5); b = Button(w, w.view.bounds.moveBy(20,200).resizeBy(-40,-240)).states_([["Laugh"]]).resize_(5) .action_({ x = { var saw = Saw.ar((EnvGen.kr(v.env, doneAction:2) * 440)); // lazy var out = Mix.new(BBandPass.ar(saw, f, q) * a).dup; HPF.ar(out, 250); // avoid blowups }.play; }); w.front; )