import { WindowFunctionName } from "fft-windowing-ts";
import { PowerTwoWindowSize } from "../../helpers/audio/models";
import { ColorMapName } from "../../helpers/audio/colors";
export declare enum SpectrogramCanvasScale {
    STRETCH = "stretch",
    NATURAL = "natural",
    ORIGINAL = "original"
}
export interface ISpectrogramOptions {
    /** Number of samples in each window for the fft must be a power of 2 */
    windowSize?: PowerTwoWindowSize;
    /** number of samples to overlap between windows */
    windowOverlap?: number;
    windowFunction?: WindowFunctionName;
    melScale?: boolean;
    brightness?: number;
    contrast?: number;
    colorMap?: ColorMapName;
    scaling?: SpectrogramCanvasScale;
}
export declare class SpectrogramOptions implements ISpectrogramOptions {
    constructor(options: Required<ISpectrogramOptions>);
    windowSize: PowerTwoWindowSize;
    windowOverlap: number;
    windowFunction: WindowFunctionName;
    melScale: boolean;
    brightness: number;
    contrast: number;
    colorMap: ColorMapName;
    scaling: SpectrogramCanvasScale;
    get windowStep(): number;
}