/// <reference types="node" />
import { Transform, TransformCallback } from "stream";
import { Smp, Hz } from "../global";
interface MeanSquareChunk {
    meanSquare: number;
    meanSquareByChannel: number[];
    time: Smp;
    sampleRate: Hz;
}
/** Calculate the mean square of incoming audio chunks */
declare class MeanSquare extends Transform {
    constructor();
    _transform(chunk: AudioBuffer, encoding: string, callback: TransformCallback): void;
}
export { MeanSquare, MeanSquareChunk };