murmuraba/dist/utils/gain-control.d.ts

Real-time audio noise reduction with advanced chunked processing for web applications

/**
 * Centralized Gain Control Utilities
 * Eliminates code duplication and provides consistent gain management
 */
export interface GainConfig {
    min: number;
    max: number;
    default: number;
    step: number;
}
export declare const DEFAULT_GAIN_CONFIG: GainConfig;
export declare const GAIN_PRESETS: {
    readonly LOW: 0.7;
    readonly NORMAL: 1;
    readonly HIGH: 1.5;
    readonly BOOST: 2;
};
/**
 * Validates and clamps gain value within acceptable range
 */
export declare function validateGain(gain: number, config?: GainConfig): number;
/**
 * Converts gain value to decibels for UI display
 */
export declare function gainToDb(gain: number): number;
/**
 * Converts decibels to gain value
 */
export declare function dbToGain(db: number): number;
/**
 * Gets gain preset by name
 */
export declare function getGainPreset(preset: keyof typeof GAIN_PRESETS): number;
/**
 * Gets descriptive text for gain level
 */
export declare function getGainDescription(gain: number): string;
/**
 * Advanced Gain Controller Class
 * Encapsulates gain control logic with validation and events
 */
export declare class GainController {
    private _currentGain;
    private readonly config;
    private listeners;
    constructor(initialGain?: number, config?: GainConfig);
    get currentGain(): number;
    setGain(gain: number): boolean;
    incrementGain(): number;
    decrementGain(): number;
    applyPreset(preset: keyof typeof GAIN_PRESETS): void;
    getDescription(): string;
    getDbValue(): number;
    onGainChange(callback: (gain: number) => void): () => void;
    private notifyListeners;
    destroy(): void;
}
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