audio-inspect/dist/features/vad.d.ts

Lightweight yet powerful audio analysis library

interface AudioData {
    sampleRate: number;
    channelData: Float32Array[];
    duration: number;
    numberOfChannels: number;
    length: number;
}
type ChannelSelector = 'mix' | number | 'all' | readonly number[];

interface VADOptions {
    channel?: ChannelSelector;
    frameSizeMs?: number;
    hopSizeMs?: number;
    method?: 'energy' | 'zcr' | 'combined' | 'adaptive';
    energyThreshold?: number;
    zcrThresholdLow?: number;
    zcrThresholdHigh?: number;
    adaptiveAlpha?: number;
    noiseFactor?: number;
    minSilenceDurationMs?: number;
    minSpeechDurationMs?: number;
    preEmphasis?: boolean;
    smoothing?: boolean;
}
interface VADSegment {
    start: number;
    end: number;
    type: 'speech' | 'silence';
    confidence?: number;
}
interface VADResult {
    segments: VADSegment[];
    speechRatio: number;
    features?: {
        energies: Float32Array;
        zcrs: Float32Array;
        decisions: Float32Array;
        times: Float32Array;
    };
}
declare function getVAD(audio: AudioData, options?: VADOptions): VADResult;

export { type VADOptions, type VADResult, type VADSegment, getVAD };