/**
 * SpessaSynthWrapper - Wrapper for spessasynth_lib WorkletSynthesizer
 */
export declare class SpessaSynthWrapper {
    audioContext: AudioContext;
    synthesizer: any;
    sequencer: any | null;
    soundBankLoaded: boolean;
    soundBankName: string;
    isReady: boolean;
    initialized: boolean;
    processorUrl: string | null;
    masterGain: GainNode | null;
    volume: number;
    private _volumeWarningShown;
    private _controlChangeWarningShown;
    private _autoLoadAttempted;
    private visibilityManager;
    constructor(audioContext: AudioContext);
    /**
     * Enable smooth tab switching to prevent audio stuttering
     */
    private enableSmoothTabSwitching;
    /**
     * Get sequencer for timing synchronization
     * In spessasynth_lib, the synthesizer itself can act as a sequencer
     */
    getSequencer(): any | null;
    initialize(processorUrl: string): Promise<void>;
    /**
     * Auto-load soundfont from a URL/path
     * This is automatically called after initialize() if env config enables it
     */
    autoLoadSoundFont(soundFontPath: string, bankName?: string): Promise<void>;
    loadSoundFont(soundFontBuffer: ArrayBuffer, bankName?: string): Promise<boolean>;
    noteOn(channel: number, note: number, velocity: number): void;
    noteOff(channel: number, note: number): void;
    programChange(channel: number, program: number): void;
    setChannelVolume(channel: number, volume: number): void;
    setVolume(volume: number): void;
    resume(): Promise<void>;
}