File size: 591 Bytes
b797337 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | class AudioAnalyser {
constructor( audio, fftSize = 2048 ) {
this.analyser = audio.context.createAnalyser();
this.analyser.fftSize = fftSize;
this.data = new Uint8Array( this.analyser.frequencyBinCount );
audio.getOutput().connect( this.analyser );
}
getFrequencyData() {
this.analyser.getByteFrequencyData( this.data );
return this.data;
}
getAverageFrequency() {
let value = 0;
const data = this.getFrequencyData();
for ( let i = 0; i < data.length; i ++ ) {
value += data[ i ];
}
return value / data.length;
}
}
export { AudioAnalyser };
|