import { DecodedMessage } from "./signature-format";
export declare class RingBuffer<T> {
    bufferSize: number;
    list: (T | null)[];
    position: number;
    constructor(bufferSize: number, defaultValue?: T | (() => T));
}
export declare class SignatureGenerator {
    private ringBufferOfSamples;
    private fftOutputs;
    private spreadFFTsOutput;
    private num_spread_ffts_done;
    private nextSignature;
    private initFields;
    constructor();
    getSignature(s16leMonoSamples: number[]): DecodedMessage | null;
    doFFT(batchOf128S16leMonoSamples: number[]): void;
    doPeakSpreading(): void;
    doPeakRecognition(): void;
}