| 1 | import { Gain } from "../../core/context/Gain.js";
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| 2 | import { ToneAudioNode, ToneAudioNodeOptions } from "../../core/context/ToneAudioNode.js";
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| 3 | import { Frequency, Positive } from "../../core/type/Units.js";
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| 4 | import { Signal } from "../../signal/Signal.js";
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| 5 | import { Filter } from "../filter/Filter.js";
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| 6 | interface MultibandSplitOptions extends ToneAudioNodeOptions {
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| 7 | Q: Positive;
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| 8 | lowFrequency: Frequency;
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| 9 | highFrequency: Frequency;
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| 10 | }
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| 11 | /**
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| 12 | * Split the incoming signal into three bands (low, mid, high)
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| 13 | * with two crossover frequency controls.
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| 14 | * ```
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| 15 | * +----------------------+
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| 16 | * +-> input < lowFrequency +------------------> low
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| 17 | * | +----------------------+
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| 18 | * |
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| 19 | * | +--------------------------------------+
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| 20 | * input ---+-> lowFrequency < input < highFrequency +--> mid
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| 21 | * | +--------------------------------------+
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| 22 | * |
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| 23 | * | +-----------------------+
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| 24 | * +-> highFrequency < input +-----------------> high
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| 25 | * +-----------------------+
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| 26 | * ```
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| 27 | * @category Component
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| 28 | */
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| 29 | export declare class MultibandSplit extends ToneAudioNode<MultibandSplitOptions> {
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| 30 | readonly name: string;
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| 31 | /**
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| 32 | * the input
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| 33 | */
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| 34 | readonly input: Gain<"gain">;
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| 35 | /**
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| 36 | * no output node, use either low, mid or high outputs
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| 37 | */
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| 38 | readonly output: undefined;
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| 39 | /**
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| 40 | * The low band.
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| 41 | */
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| 42 | readonly low: Filter;
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| 43 | /**
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| 44 | * the lower filter of the mid band
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| 45 | */
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| 46 | private _lowMidFilter;
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| 47 | /**
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| 48 | * The mid band output.
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| 49 | */
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| 50 | readonly mid: Filter;
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| 51 | /**
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| 52 | * The high band output.
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| 53 | */
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| 54 | readonly high: Filter;
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| 55 | /**
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| 56 | * The low/mid crossover frequency.
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| 57 | */
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| 58 | readonly lowFrequency: Signal<"frequency">;
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| 59 | /**
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| 60 | * The mid/high crossover frequency.
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| 61 | */
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| 62 | readonly highFrequency: Signal<"frequency">;
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| 63 | protected _internalChannels: Filter[];
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| 64 | /**
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| 65 | * The Q or Quality of the filter
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| 66 | */
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| 67 | readonly Q: Signal<"positive">;
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| 68 | /**
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| 69 | * @param lowFrequency the low/mid crossover frequency
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| 70 | * @param highFrequency the mid/high crossover frequency
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| 71 | */
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| 72 | constructor(lowFrequency?: Frequency, highFrequency?: Frequency);
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| 73 | constructor(options?: Partial<MultibandSplitOptions>);
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| 74 | static getDefaults(): MultibandSplitOptions;
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| 75 | /**
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| 76 | * Clean up.
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| 77 | */
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| 78 | dispose(): this;
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| 79 | }
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| 80 | export {};
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