/**
 * The microphone effects, sample by sample with no lookahead, for the own voice transport (GRYT-1819).
 * No imports and no Web Audio, so an AudioWorklet can run it as it is. Same settings as the graph's.
 */
export interface VoiceEffectSettings {
    /** The volume slider, 0–200 %, 100 = unchanged. */
    volume: number;
    /** The gate slider, 0–100 on the meter's scale. 0 means no gate. */
    gateThreshold: number;
    gateReleaseMs: number;
    /** Level smoothing, as AnalyserNode.smoothingTimeConstant: 0.8, or 0.3 in eSports. */
    gateSmoothing: number;
    autoGain: boolean;
    autoGainTargetDb: number;
    compressor: boolean;
    /** The compressor slider, 0–100. */
    compressorAmount: number;
    /** Whether the soft limiter runs. The graph runs it whenever any processing does. */
    limiter: boolean;
}
export declare class VoiceEffects {
    private settings;
    private readonly sampleRate;
    private level;
    private gateGain;
    private gateOpen;
    private holdSamples;
    private compEnv;
    private agcTarget;
    private agcGain;
    private agcSum;
    private agcPeak;
    private agcCount;
    constructor(sampleRate: number, settings: VoiceEffectSettings);
    set(settings: VoiceEffectSettings): void;
    /** The gate's smoothed level, 0–100, the number the gate slider is compared with. */
    get meter(): number;
    get open(): boolean;
    /** In place. Every output sample depends only on samples up to it. With `right`, both sides get one gain. */
    process(block: Float32Array, right?: Float32Array): void;
}