/// <reference types="node" />
import { SpectralBuffer } from "../SpectralBuffer";
import { Transform, TransformCallback } from 'stream';
/** Measures the spectral centroid of a SpectralBuffer stream */
declare class SpectralCentroid extends Transform {
    constructor();
    _transform(spectrum: SpectralBuffer, encoding: string, callback: TransformCallback): void;
}
export default SpectralCentroid;
export { SpectralCentroid };