export interface AudioContextOptions {
    tone?: number;
    wpm?: number;
    fwpm?: number;
    actx?: AudioContextResult;
}
export interface AudioContextResult {
    actx: AudioContext;
    osc: OscillatorNode;
    gain: GainNode;
}
/**
 * Initialize the Web Audio API context
 * @param opts Options for initializing the audio context
 * @returns The initialized audio context or undefined if window is not available
 */
declare function initAudioContext(opts?: AudioContextOptions): AudioContextResult | undefined;
/**
 * Play a word or phrase in Morse code
 * @param word The word or phrase to play
 * @param opts Options for playback
 * @returns The total duration of playback in milliseconds
 */
declare function play(word: string, opts?: AudioContextOptions): number;
export { initAudioContext, play };