#include <Audio.h>
AudioSynthWaveform waveform;
AudioEffectWaveshaper waveshape1;
AudioOutputI2S i2s2;
AudioConnection patchCord1(waveform, 0, waveshape1, 0);
AudioConnection patchCord2(waveshape1, 0, i2s2, 0);
AudioConnection patchCord3(waveshape1, 0, i2s2, 1);
AudioControlSGTL5000 sgtl5000_1;
const float wave_shape_flat[2] = {
-1.0,
1.0
};
const float wave_shape_chebyshev_3rd [257] =
{
-1.0,-0.9375,-0.8671875,-0.796875,-0.734375,-0.671875,-0.609375,-0.546875,-0.484375,-0.4296875,-0.375,-0.3203125,
-0.265625,-0.2109375,-0.15625,-0.109375,-0.0546875,-0.0078125,0.0390625,0.078125,0.125,0.1640625,0.2109375,0.25,
0.2890625,0.328125,0.359375,0.3984375,0.4296875,0.46875,0.5,0.53125,0.5546875,0.5859375,0.6171875,0.640625,0.6640625,
0.6953125,0.71875,0.734375,0.7578125,0.78125,0.796875,0.8203125,0.8359375,0.8515625,0.8671875,0.8828125,0.890625,
0.90625,0.921875,0.9296875,0.9375,0.953125,0.9609375,0.96875,0.96875,0.9765625,0.984375,0.984375,0.9921875,0.9921875,
0.9921875,0.9921875,0.9921875,0.9921875,0.9921875,0.9921875,0.9921875,0.984375,0.984375,0.9765625,0.9765625,0.96875,
0.9609375,0.953125,0.9453125,0.9375,0.9296875,0.921875,0.90625,0.8984375,0.890625,0.875,0.8671875,0.8515625,0.8359375,
0.828125,0.8125,0.796875,0.78125,0.765625,0.75,0.734375,0.71875,0.703125,0.6796875,0.6640625,0.6484375,0.6328125,0.609375,
0.59375,0.5703125,0.5546875,0.53125,0.515625,0.4921875,0.46875,0.453125,0.4296875,0.40625,0.3828125,0.359375,0.34375,0.3203125,
0.296875,0.2734375,0.25,0.2265625,0.203125,0.1796875,0.15625,0.1328125,0.109375,0.0859375,0.0625,0.0390625,0.015625,0,
-0.0234375,-0.046875,-0.0703125,-0.09375,-0.1171875,-0.140625,-0.1640625,-0.1875,-0.2109375,-0.234375,-0.2578125,-0.28125,
-0.3046875,-0.328125,-0.3515625,-0.3671875,-0.390625,-0.4140625,-0.4375,-0.4609375,-0.4765625,-0.5,-0.5234375,-0.5390625,
-0.5625,-0.578125,-0.6015625,-0.6171875,-0.640625,-0.65625,-0.671875,-0.6875,-0.7109375,-0.7265625,-0.7421875,-0.7578125,
-0.7734375,-0.7890625,-0.8046875,-0.8203125,-0.8359375,-0.84375,-0.859375,-0.875,-0.8828125,-0.8984375,-0.90625,-0.9140625,
-0.9296875,-0.9375,-0.9453125,-0.953125,-0.9609375,-0.96875,-0.9765625,-0.984375,-0.984375,-0.9921875,-0.9921875,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-0.9921875,-0.9921875,-0.984375,-0.9765625,-0.9765625,-0.96875,-0.9609375,-0.9453125,-0.9375,-0.9296875,-0.9140625,
-0.8984375,-0.890625,-0.875,-0.859375,-0.84375,-0.828125,-0.8046875,-0.7890625,-0.765625,-0.7421875,-0.7265625,-0.703125,
-0.671875,-0.6484375,-0.625,-0.59375,-0.5625,-0.5390625,-0.5078125,-0.4765625,-0.4375,-0.40625,-0.3671875,-0.3359375,-0.296875,
-0.2578125,-0.21875,-0.171875,-0.1328125,-0.0859375,-0.046875,0,0.046875,0.1015625,0.1484375,0.203125,0.2578125,0.3125,0.3671875,
0.421875,0.4765625,0.5390625,0.6015625,0.6640625,0.7265625,0.7890625,0.859375,0.9296875,0.9996875
};
const float wave_shape_chebyshev_6th [257] =
{
0.490693441,0.270855938,0.072669375,-0.104991361,-0.263216483,-0.403061926,-0.525549963,-0.631669818,-0.722378276,
-0.79860028,-0.861229534,-0.911129093,-0.949131951,-0.976041622,-0.992632719,-0.999651527,-0.997816569,-0.987819169,
-0.970324009,-0.945969683,-0.915369243,-0.879110741,-0.837757768,-0.791849987,-0.741903658,-0.688412162,-0.631846518,
-0.572655896,-0.511268125,-0.448090193,-0.383508747,-0.317890586,-0.251583144,-0.184914977,-0.118196241,-0.05171916,
0.014241505,0.079427988,0.143599071,0.206529621,0.268010148,0.327846365,0.385858743,0.441882084,0.495765094,0.547369957,
0.59657192,0.643258879,0.687330973,0.728700181,0.767289925,0.803034675,0.835879566,0.86578001,0.892701325,0.916618355,
0.93751511,0.955384399,0.970227472,0.982053671,0.990880081,0.996731184,0.999638529,0.999640393,0.996781454,0.991112473,
0.982689972,0.971575925,0.957837447,0.941546494,0.922779566,0.90161741,0.87814474,0.852449947,0.824624828,0.794764306,
0.762966172,0.729330814,0.693960964,0.656961444,0.61843892,0.578501658,0.537259286,0.494822565,0.451303155,0.406813401,
0.361466108,0.315374332,0.268651175,0.221409575,0.173762116,0.125820832,0.077697021,0.029501059,-0.018657772,-0.066671461,
-0.114433432,-0.161838711,-0.208784079,-0.255168227,-0.300891902,-0.345858051,-0.389971958,-0.433141375,-0.475276652,
-0.516290858,-0.556099899,-0.594622629,-0.63178096,-0.667499963,-0.701707965,-0.734336644,-0.765321112,-0.794600003,
-0.822115545,-0.847813638,-0.871643916,-0.893559814,-0.913518623,-0.931481545,-0.947413734,-0.961284349,-0.973066581,
-0.982737693,-0.990279043,-0.99567611,-0.998918508,-1,-0.998918508,-0.99567611,-0.990279043,-0.982737693,-0.973066581,
-0.961284349,-0.947413734,-0.931481545,-0.913518623,-0.893559814,-0.871643916,-0.847813638,-0.822115545,-0.794600003,
-0.765321112,-0.734336644,-0.701707965,-0.667499963,-0.63178096,-0.594622629,-0.556099899,-0.516290858,-0.475276652,
-0.433141375,-0.389971958,-0.345858051,-0.300891902,-0.255168227,-0.208784079,-0.161838711,-0.114433432,-0.066671461,
-0.018657772,0.029501059,0.077697021,0.125820832,0.173762116,0.221409575,0.268651175,0.315374332,0.361466108,0.406813401,
0.451303155,0.494822565,0.537259286,0.578501658,0.61843892,0.656961444,0.693960964,0.729330814,0.762966172,0.794764306,
0.824624828,0.852449947,0.87814474,0.90161741,0.922779566,0.941546494,0.957837447,0.971575925,0.982689972,0.991112473,
0.996781454,0.999640393,0.999638529,0.996731184,0.990880081,0.982053671,0.970227472,0.955384399,0.93751511,0.916618355,
0.892701325,0.86578001,0.835879566,0.803034675,0.767289925,0.728700181,0.687330973,0.643258879,0.59657192,0.547369957,
0.495765094,0.441882084,0.385858743,0.327846365,0.268010148,0.206529621,0.143599071,0.079427988,0.014241505,-0.05171916,
-0.118196241,-0.184914977,-0.251583144,-0.317890586,-0.383508747,-0.448090193,-0.511268125,-0.572655896,-0.631846518,
-0.688412162,-0.741903658,-0.791849987,-0.837757768,-0.879110741,-0.915369243,-0.945969683,-0.970324009,-0.987819169,
-0.997816569,-0.999651527,-0.992632719,-0.976041622,-0.949131951,-0.911129093,-0.861229534,-0.79860028,-0.722378276,
-0.631669818,-0.525549963,-0.403061926,-0.263216483,-0.104991361,0.072669375,0.270855938,0.490693441,0.733342528,1
};
int i = 0;
void setup() {
Serial.begin(9600);
AudioMemory(40);
waveform.begin(1.0, 200.0, WAVEFORM_SINE);
}
void loop() {
Serial.print("Running:");
Serial.println(i++);
waveshape1.shape((float *)wave_shape_flat, 2);
delay (500);
waveshape1.shape((float *)wave_shape_chebyshev_3rd, 257);
delay(500);
waveshape1.shape((float *)wave_shape_chebyshev_6th, 257);
delay(500);
}