Basic audio analyser. Returns back waveform and FFT analysis. Use peakLevel if you want sound level, or freq if you just want FFT results.
const onData = (freq, wave, analyser) => { // Demo: Get FFT results just for 100Hz-1KHz. const freqSlice = analyser.sliceByFrequency(100,1000,freq); // Demo: Get FFT value for a particular frequency (1KHz) const amt = freq[analyser.getIndexForFrequency(1000)];}basic(onData, {fftSize: 512}); Copy
const onData = (freq, wave, analyser) => { // Demo: Get FFT results just for 100Hz-1KHz. const freqSlice = analyser.sliceByFrequency(100,1000,freq); // Demo: Get FFT value for a particular frequency (1KHz) const amt = freq[analyser.getIndexForFrequency(1000)];}basic(onData, {fftSize: 512});
An Analyser instance is returned and can be controlled:
Analyser
const analyser = basic(onData);analyser.paused = true; Copy
const analyser = basic(onData);analyser.paused = true;
Note: Browers won't allow microphone access unless the call has come from a user-interaction, eg pointerup event handler.
Handler for data
Options
Analyser instance
Basic audio analyser. Returns back waveform and FFT analysis. Use peakLevel if you want sound level, or freq if you just want FFT results.
An
Analyser
instance is returned and can be controlled:Note: Browers won't allow microphone access unless the call has come from a user-interaction, eg pointerup event handler.