import { ToneAudioBuffer } from "../core/context/ToneAudioBuffer";
import { Effect, EffectOptions } from "./Effect";
interface ToneConvolverOptions extends EffectOptions {
    onload: () => void;
    normalize: boolean;
    url?: string | AudioBuffer | ToneAudioBuffer;
}
/**
 * Convolver is a wrapper around the Native Web Audio
 * [ConvolverNode](http://webaudio.github.io/web-audio-api/#the-convolvernode-interface).
 * Convolution is useful for reverb and filter emulation. Read more about convolution reverb on
 * [Wikipedia](https://en.wikipedia.org/wiki/Convolution_reverb).
 *
 * @example
 * //initializing the convolver with an impulse response
 * var convolver = new Convolver("./path/to/ir.wav").toDestination();
 * @category Effect
 */
export declare class Convolver extends Effect<ToneConvolverOptions> {
    readonly name: string;
    /**
     * The native ConvolverNode
     */
    private _convolver;
    /**
     * The Buffer belonging to the convolver
     */
    private _buffer;
    /**
     * @param url The URL of the impulse response or the ToneAudioBuffer containing the impulse response.
     * @param onload The callback to invoke when the url is loaded.
     */
    constructor(url?: string | AudioBuffer | ToneAudioBuffer, onload?: () => void);
    constructor(options?: Partial<ToneConvolverOptions>);
    static getDefaults(): ToneConvolverOptions;
    /**
     * Load an impulse response url as an audio buffer.
     * Decodes the audio asynchronously and invokes
     * the callback once the audio buffer loads.
     * @param url The url of the buffer to load. filetype support depends on the browser.
     */
    load(url: string): Promise<void>;
    /**
     * The convolver's buffer
     */
    buffer: ToneAudioBuffer | null;
    /**
     * The normalize property of the ConvolverNode interface is a boolean that
     * controls whether the impulse response from the buffer will be scaled by
     * an equal-power normalization when the buffer attribute is set, or not.
     */
    normalize: boolean;
    dispose(): this;
}
export {};