A low pass filter.
npm install low-pass-filter
Use the low-pass-filter.js file in the /dist folder:
<script src="./dist/low-pass-filter.js"></script>
<script>
lowPassFilter.lowPassFilter(samples, 22050, 44100, 2);
</script>Or load it from the jsDelivr CDN:
<script src="https://cdn.jsdelivr.net/npm/low-pass-filter"></script>Or load it from unpkg:
<script src="https://unpkg.com/low-pass-filter"></script>const lowPassFilter = require('low-pass-filter').lowPassFilter;
lowPassFilter(samples, 22050, 44100, 2);/**
* Low pass filter.
* @param {!Array<number>|TypedArray} samples The samples.
* @param {number} cutoff The cutoff frequency.
* @param {number} sampleRate The sample rate.
* @param {number} numChannels The number of channels.
*/
function lowPassFilter(samples, cutoff, sampleRate, numChannels) {}https://github.com/jiaaro/pydub/blob/master/pydub/effects.py#L187
http://stackoverflow.com/questions/13882038/implementing-simple-high-and-low-pass-filters-in-c
Copyright (c) 2018 Rafael da Silva Rocha.
Copyright (c) 2011 James Robert, http://jiaaro.com
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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