/**
 * Galaxy Sound Effects
 *
 * Procedural sci-fi sound effects for the Galaxy visualization using jsfxr.
 * All sounds are generated on-the-fly using the Web Audio API.
 *
 * Sound Categories:
 * - Navigation: hover, select, deselect, zoom
 * - Data: path activation, data flow pulse
 * - Security: alert, warning, critical
 * - Ambient: background hum, star twinkle
 */
export type SoundType = 'hover' | 'select' | 'deselect' | 'zoom' | 'pathActivate' | 'dataFlow' | 'alertLow' | 'alertMedium' | 'alertHigh' | 'alertCritical' | 'warp' | 'scan' | 'powerUp' | 'powerDown' | 'click' | 'blip';
export interface SoundConfig {
    enabled: boolean;
    volume: number;
    muted: boolean;
}
/**
 * Galaxy Sound Engine
 *
 * Manages sound effect playback for the Galaxy visualization.
 * Uses jsfxr for procedural sound generation.
 */
export declare class GalaxySoundEngine {
    private config;
    private audioCache;
    private sfxr;
    private initialized;
    private initPromise;
    constructor(config?: Partial<SoundConfig>);
    /**
     * Initialize the sound engine (lazy load jsfxr)
     */
    initialize(): Promise<void>;
    private doInitialize;
    /**
     * Play a sound effect
     */
    play(type: SoundType): Promise<void>;
    /**
     * Play a sound with pitch variation (for variety)
     */
    playWithVariation(type: SoundType, pitchVariation?: number): Promise<void>;
    /**
     * Play alert sound based on severity
     */
    playAlert(severity: 'low' | 'medium' | 'high' | 'critical'): Promise<void>;
    /**
     * Update configuration
     */
    setConfig(config: Partial<SoundConfig>): void;
    /**
     * Get current configuration
     */
    getConfig(): SoundConfig;
    /**
     * Toggle mute
     */
    toggleMute(): boolean;
    /**
     * Set volume (0-1)
     */
    setVolume(volume: number): void;
    /**
     * Enable/disable sounds
     */
    setEnabled(enabled: boolean): void;
}
/**
 * Get the global sound engine instance
 */
export declare function getGalaxySoundEngine(): GalaxySoundEngine;
/**
 * Create a new sound engine instance (for testing or custom configs)
 */
export declare function createGalaxySoundEngine(config?: Partial<SoundConfig>): GalaxySoundEngine;
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