import { FFTBins, Hz, Smp } from "./global";
/** Stores a single frame of multichannel FFT data. */
declare class SpectralBuffer {
    private _data;
    sampleRate: Hz;
    time: Smp;
    constructor();
    readonly numberOfChannels: number;
    readonly frameSize: number;
    readonly windowSize: number;
    getChannelData(c: number): number[] | Float32Array;
    binFrequency(bin: number): number;
    binOfFrequency(f: Hz): number;
    static fromArray(channelData: FFTBins[], sampleRate: Hz): SpectralBuffer;
}
export { SpectralBuffer };