import { Seismogram } from "./seismogram.mjs";
/**
 * Applies a time domain taper of the given type.
 *
 * @param   seis      Seismogram to taper
 * @param   width     width as a fraction of seismogram length, default is 0.05
 * @param   taperType taper type, default is HANNING, others are HAMMING and COSINE
 * @returns            copy of seismogram with taper applied.
 */
export declare function taper(seis: Seismogram, width?: number, taperType?: string): Seismogram;
/**
 * Calculates the coefficients for tapering, [omega, f0, f1]
 *
 * @param type HANNING, HAMMING or COSINE
 * @param length number of data points
 * @returns tapering coefficients as an array of length 3
 */
export declare function getCoefficients(type: string, length: number): Array<number>;
export declare const HANNING = "HANNING";
export declare const HAMMING = "HAMMING";
export declare const COSINE = "COSINE";
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