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three

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JavaScript 3D library

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function AudioAnalyser( audio, fftSize ) { this.analyser = audio.context.createAnalyser(); this.analyser.fftSize = fftSize !== undefined ? fftSize : 2048; this.data = new Uint8Array( this.analyser.frequencyBinCount ); audio.getOutput().connect( this.analyser ); } Object.assign( AudioAnalyser.prototype, { getFrequencyData: function () { this.analyser.getByteFrequencyData( this.data ); return this.data; }, getAverageFrequency: function () { let value = 0; const data = this.getFrequencyData(); for ( let i = 0; i < data.length; i ++ ) { value += data[ i ]; } return value / data.length; } } ); export { AudioAnalyser };