How to use the waveform-data/webaudio function in waveform-data
To help you get started, we’ve selected a few waveform-data examples, based on popular ways it is used in public projects.
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joshwcomeau / beatmapper / src / middlewares / song.middleware.helpers.js View on Github 
return new Promise((resolve, reject) => {
webAudioBuilder(audioContext, arrayBuffer, (err, waveform) => {
if (err) {
reject(err);
}
resolve(waveform);
});
});
};.then(buffer => {
webAudioBuilder(audioContext, buffer, (err, waveform) => {
if (err) {
reject(err);
}
resolve(waveform);
});
});
});waveform-data
Audio Waveform Data Manipulation API – resample, offset and segment waveform data in JavaScript
