getWaveformRange

getWaveformRange(audioBuffer, startTime, endTime, options?): object

Defined in: packages/pleco-xa/src/scripts/analysis/WaveformData.ts:256

Generates waveform data for a specific time range

Parameters

audioBuffer

any

Web Audio API AudioBuffer

startTime

any

Start time in seconds

endTime

any

End time in seconds

options?

Extraction options

Returns

object

Waveform data for the specified range

data

data: Float32Array<any>

duration

duration: any = audioBuffer.duration

length

length: any = data.length

metadata

metadata: object

metadata.method

method: string = opts.type

metadata.originalLength

originalLength: any = channelData.length

metadata.samplesPerPeak

samplesPerPeak: number

peaks

peaks: Float32Array<any>

sampleRate

sampleRate: any = audioBuffer.sampleRate

Example

import { getWaveformRange } from './analysis/WaveformData.ts';

// Get waveform for seconds 10-20
const rangeWaveform = getWaveformRange(audioBuffer, 10, 20, {
  width: 500,
  type: 'rms'
});