/**
 *  LittleJS Audio System
 *  <br> - ZzFX Sound Effects and ZzFXM Music
 *  <br> - Caches sounds and music for fast playback
 *  <br> - Can attenuate and apply stereo panning to sounds
 *  <br> - Ability to play mp3, ogg, and wave files
 *  <br> - Speech synthesis wrapper functions
 *  @namespace Audio
 */
/** Sound Object - Stores a zzfx sound for later use and can be played positionally */
export declare class Sound {
    cachedSamples: any;
    randomness: any;
    range: any;
    taper: any;
    /** Create a sound object and cache the zzfx samples for later use
     *  @param {Array}  zzfxSound - Array of zzfx parameters, ex. [.5,.5]
     *  @param {Number} [range=defaultSoundRange] - World space max range of sound, will not play if camera is farther away
     *  @param {Number} [taper=defaultSoundTaper] - At what percentage of range should it start tapering off
     */
    constructor(zzfxSound: any, range?: number, taper?: number);
    /** Play the sound
     *  @param {Vector2} [pos] - World space position to play the sound, sound is not attenuated if null
     *  @param {Number}  [volume=1] - How much to scale volume by (in addition to range fade)
     *  @param {Number}  [pitch=1] - How much to scale pitch by (also adjusted by this.randomness)
     *  @param {Number}  [randomnessScale=1] - How much to scale randomness
     *  @return {AudioBufferSourceNode} - The audio, can be used to stop sound later
     */
    play(pos: any, volume?: number, pitch?: number, randomnessScale?: number): any;
    /** Play the sound as a note with a semitone offset
     *  @param {Number}  semitoneOffset - How many semitones to offset pitch
     *  @param {Vector2} [pos] - World space position to play the sound, sound is not attenuated if null
     *  @param {Number}  [volume=1] - How much to scale volume by (in addition to range fade)
     *  @return {AudioBufferSourceNode} - The audio, can be used to stop sound later
     */
    playNote(semitoneOffset: any, pos: any, volume?: number): any;
}
/** Music Object - Stores a zzfx music track for later use */
export declare class Music {
    cachedSamples: any;
    /** Create a music object and cache the zzfx music samples for later use
     *  @param {Array} zzfxMusic - Array of zzfx music parameters
     */
    constructor(zzfxMusic: any);
    /** Play the music
     *  @param {Number}  [volume=1] - How much to scale volume by
     *  @param {Boolean} [loop=1] - True if the music should loop when it reaches the end
     *  @return {AudioBufferSourceNode} - The audio node, can be used to stop sound later
     */
    play(volume?: number, loop?: number): any;
}
/** Play an mp3 or wav audio from a local file or url
 *  @param {String}  url - Location of sound file to play
 *  @param {Number}  [volume=1] - How much to scale volume by
 *  @param {Boolean} [loop=1] - True if the music should loop when it reaches the end
 *  @return {HTMLAudioElement} - The audio element for this sound
 *  @memberof Audio */
export declare function playAudioFile(url: any, volume?: number, loop?: boolean): HTMLAudioElement | undefined;
/** Speak text with passed in settings
 *  @param {String} text - The text to speak
 *  @param {String} [language] - The language/accent to use (examples: en, it, ru, ja, zh)
 *  @param {Number} [volume=1] - How much to scale volume by
 *  @param {Number} [rate=1] - How quickly to speak
 *  @param {Number} [pitch=1] - How much to change the pitch by
 *  @return {SpeechSynthesisUtterance} - The utterance that was spoken
 *  @memberof Audio */
export declare function speak(text: any, language?: string, volume?: number, rate?: number, pitch?: number): SpeechSynthesisUtterance | undefined;
/** Stop all queued speech
 *  @memberof Audio */
export declare const stopSpeech: () => void;
/** Get frequency of a note on a musical scale
 *  @param {Number} semitoneOffset - How many semitones away from the root note
 *  @param {Number} [rootNoteFrequency=220] - Frequency at semitone offset 0
 *  @return {Number} - The frequency of the note
 *  @memberof Audio */
export declare const getNoteFrequency: (semitoneOffset: any, rootFrequency?: number) => number;
/** Play cached audio samples with given settings
 *  @param {Array}   sampleChannels - Array of arrays of samples to play (for stereo playback)
 *  @param {Number}  [volume=1] - How much to scale volume by
 *  @param {Number}  [rate=1] - The playback rate to use
 *  @param {Number}  [pan=0] - How much to apply stereo panning
 *  @param {Boolean} [loop=0] - True if the sound should loop when it reaches the end
 *  @return {AudioBufferSourceNode} - The audio node of the sound played
 *  @memberof Audio */
export declare function playSamples(sampleChannels: any, volume?: number, rate?: number, pan?: number, loop?: number): any;
/** Generate and play a ZzFX sound
 *  @param {Array} zzfxSound - Array of ZzFX parameters, ex. [.5,.5]
 *  @return {Array} - Array of audio samples
 *  @memberof Audio */
export declare const zzfx: (...zzfxSound: any[]) => any;
/** Sample rate used for all ZzFX sounds
 *  @default 44100
 *  @memberof Audio */
export declare const zzfxR = 44100;
/** Generate samples for a ZzFX sound
 *  @memberof Audio */
export declare function zzfxG(volume?: number, randomness?: number, frequency?: number, attack?: number, sustain?: number, release?: number, shape?: number, shapeCurve?: number, slide?: number, deltaSlide?: number, pitchJump?: number, pitchJumpTime?: number, repeatTime?: number, noise?: number, modulation?: number, bitCrush?: number, delay?: number, sustainVolume?: number, decay?: number, tremolo?: number): number[];
/** Generate samples for a ZzFM song with given parameters
 *  @param {Array} instruments - Array of ZzFX sound paramaters
 *  @param {Array} patterns - Array of pattern data
 *  @param {Array} sequence - Array of pattern indexes
 *  @param {Number} [BPM=125] - Playback speed of the song in BPM
 *  @returns {Array} - Left and right channel sample data
 *  @memberof Audio */
export declare function zzfxM(instruments: any, patterns: any, sequence: any, BPM?: number): any[];