filter.md

Filter

View source code

View example

Let only low frequencies pass

import filter from 'sono/effects/filter';

const sound = sono.create('boom.mp3');

const lowpass = sound.effects.add(filter({
    type: 'lowpass',
    frequency: 400,
    peak: 10 // peak at cutoff frequency (400hz)
}));

Import lowpass from named export

import {lowpass} from 'sono/effects/filter';

const sound = sono.create('boom.mp3');

sound.effects.add(lowpass({
    frequency: 600,
    peak: 20
}));

Let only high frequencies pass

import filter from 'sono/effects/filter';

const sound = sono.create('boom.mp3');

const lowpass = sound.effects.add(filter({
    type: 'highpass',
    frequency: 800,
    peak: 20 // peak at cutoff frequency (800hz)
}));

Other types

import 'sono/effects/filter';

const sound = sono.create('boom.mp3');

// 20db boost on frequencies below 800hz
const lowshelf = sound.effects.add(sono.lowshelf({
    frequency: 800,
    boost: 20
}));

// 20db boost on frequencies above 800hz
const highshelf = sound.effects.add(sono.highshelf({
    frequency: 800,
    boost: 20
}));

// 20db boost on frequencies around 800hz
const peaking = sound.effects.add(sono.peaking({
    frequency: 800,
    width: 200,
    boost: 20
}));

// let frequencies around 800hz pass
const bandpass = sound.effects.add(sono.bandpass({
    frequency: 800,
    width: 20
}));

// let frequencies outside 800hz pass
const notch = sound.effects.add(sono.notch({
    frequency: 800,
    width: 200
}));

// Shift phase
const allpass = sound.effects.add(sono.allpass({
    frequency: 800,
    sharpness: 200
}));

For a detailed explanation of what each filter type does, see https://developer.mozilla.org/en-US/docs/Web/API/BiquadFilterNode