import { Transform, type TransformCallback } from "stream";
export declare class IsSilence extends Transform {
    private debug;
    private consecSilenceCount;
    private numSilenceFramesExitThresh;
    constructor(options: {
        debug: boolean;
    });
    getNumSilenceFramesExitThresh(): number;
    getConsecSilenceCount(): number;
    setNumSilenceFramesExitThresh(numFrames: number): void;
    incrConsecSilenceCount(): number;
    resetConsecSilenceCount(): void;
    _transform(chunk: Buffer, _: BufferEncoding, callback: TransformCallback): void;
}