export interface AC {
    audioContext(): AudioContext;
    disconnect(audioNode?: AudioNode): void;
    getDestination(): AudioDestinationNode;
    createOscillator(opt: OscillatorOptions): OscillatorNode;
    createAnalyser(opt: AnalyserOptions): AnalyserNode;
    createBufferSource(): AudioBufferSourceNode;
    decodeAudioData(buffer: ArrayBuffer): Promise<AudioBuffer>;
}
