import { Param } from "../../core/context/Param";
import { InputNode, OutputNode, ToneAudioNode, ToneAudioNodeOptions } from "../../core/context/ToneAudioNode";
import { NormalRange, Time } from "../../core/type/Units";
import { RecursivePartial } from "../../core/util/Interface";
export interface FeedbackCombFilterOptions extends ToneAudioNodeOptions {
    delayTime: Time;
    resonance: NormalRange;
}
/**
 * Comb filters are basic building blocks for physical modeling. Read more
 * about comb filters on [CCRMA's website](https://ccrma.stanford.edu/~jos/pasp/Feedback_Comb_Filters.html).
 */
export declare class FeedbackCombFilter extends ToneAudioNode<FeedbackCombFilterOptions> {
    readonly name = "FeedbackCombFilter";
    /**
     * The delay node
     */
    private _delay;
    /**
     * The feedback node
     */
    private _feedback;
    /**
     * The amount of delay of the comb filter.
     */
    readonly delayTime: Param<Time>;
    /**
     * The amount of feedback of the delayed signal.
     */
    readonly resonance: Param<NormalRange>;
    readonly input: InputNode;
    readonly output: OutputNode;
    /**
     * @param delayTime The delay time of the filter.
     * @param resonance The amount of feedback the filter has.
     */
    constructor(delayTime?: Time, resonance?: NormalRange);
    constructor(options?: RecursivePartial<FeedbackCombFilterOptions>);
    /**
     * The default parameters
     */
    static getDefaults(): FeedbackCombFilterOptions;
    dispose(): this;
}