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Pleco-Xa

analyzeWaveform

analyzeWaveform(audioBuffer, options?): object

Defined in: packages/pleco-xa/src/scripts/analysis/WaveformData.ts:317

Calculates waveform statistics for analysis

Parameters

Section titled “Parameters”

audioBuffer

Section titled “audioBuffer”

any

Web Audio API AudioBuffer

options?

Section titled “options?”

Analysis options

Returns

Section titled “Returns”

object

Statistical analysis of waveform

crestFactor

Section titled “crestFactor”

crestFactor: number

dcOffset

Section titled “dcOffset”

dcOffset: number

duration

Section titled “duration”

duration: any = audioBuffer.duration

dynamicRange

Section titled “dynamicRange”

dynamicRange: number

length

Section titled “length”

length: any = channelData.length

peak

Section titled “peak”

peak: number

rms

Section titled “rms”

rms: number

sampleRate

Section titled “sampleRate”

sampleRate: any = audioBuffer.sampleRate

zeroCrossingRate

Section titled “zeroCrossingRate”

zeroCrossingRate: number = zcr

Example

Section titled “Example”
import { analyzeWaveform } from './analysis/WaveformData.ts';


const stats = analyzeWaveform(audioBuffer);
console.log('Peak amplitude:', stats.peak);
console.log('RMS level:', stats.rms);
console.log('Dynamic range:', stats.dynamicRange);