hacklab/strudel
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Prepare to merge with PR #718

Browse source
This commit is contained in:
Vasilii Milovidov 2023-10-02 12:13:44 +04:00
parent ac9c629c0b
commit 13cb32903a
5 changed files with 341 additions and 37 deletions
Download patch file Download diff file Expand all files Collapse all files

53
packages/superdough/reverb.mjs
View file

@ -1,11 +1,7 @@
import reverbGen from './reverbGen.mjs';
if (typeof AudioContext !== 'undefined') {
AudioContext.prototype.impulseResponse = function (duration, channels = 1) {
const length = this.sampleRate * duration;
const impulse = this.createBuffer(channels, length, this.sampleRate);
const IR = impulse.getChannelData(0);
for (let i = 0; i < length; i++) IR[i] = (2 * Math.random() - 1) * Math.pow(1 - i / length, duration);
return impulse;
};
AudioContext.prototype.generateReverb = reverbGen.generateReverb;
AudioContext.prototype.adjustLength = function (duration, buffer) {
const newLength = buffer.sampleRate * duration;
@ -21,17 +17,44 @@ if (typeof AudioContext !== 'undefined') {
return newBuffer;
};
AudioContext.prototype.createReverb = function (duration, buffer) {
AudioContext.prototype.createReverb = function (audioContext, duration, fade, revlp, revdim, imp) {
const convolver = this.createConvolver();
convolver.setDuration = (dur, imp) => {
convolver.buffer = imp ? this.adjustLength(dur, imp) : this.impulseResponse(dur);
convolver.setDuration = (d, fade, revlp, revdim, imp) => {
if (imp) {
convolver.buffer = this.adjustLength(d, imp);
return convolver;
} else {
this.generateReverb(
{
audioContext,
sampleRate: 44100,
numChannels: 2,
decayTime: d,
fadeInTime: fade,
lpFreqStart: revlp,
lpFreqEnd: revdim,
},
(buffer) => {
convolver.buffer = buffer;
},
);
convolver.duration = duration;
convolver.fade = fade;
convolver.revlp = revlp;
convolver.revdim = revdim;
return convolver;
}
};
convolver.setIR = (d, fade, revlp, revdim, imp) => {
if (imp) {
convolver.buffer = this.adjustLength(d, imp);
} else {
convolver.setDuration(d, fade, revlp, revdim, imp);
}
return convolver;
};
convolver.setIR = (dur, imp) => {
convolver.buffer = imp ? this.adjustLength(dur, imp) : this.impulseResponse(dur);
return convolver;
};
convolver.setDuration(duration, buffer);
convolver.setDuration(duration, fade, revlp, revdim, imp);
return convolver;
};
}