import { VoiceBaseParams, VoiceBase } from './voice/base';
import { AperiodicVoice, AperiodicVoiceParams, UnisonVoice, UnisonVoiceParams } from './voice/oscillator';
import { BufferVoice, BufferVoiceParams } from './voice/buffer';
export * from './voice';
/**
 * Simple web audio synth of finite polyphony.
 */
export declare class Synth {
    audioContext: BaseAudioContext;
    destination: AudioNode;
    voiceParams?: VoiceBaseParams;
    log: (msg: string) => void;
    voices: VoiceBase[];
    constructor(audioContext: BaseAudioContext, destination: AudioNode, log?: (msg: string) => void);
    protected _newVoice(): VoiceBase;
    setPolyphony(maxPolyphony: number): void;
    get maxPolyphony(): number;
    set maxPolyphony(value: number);
    protected _allocateVoice(): VoiceBase | undefined;
    /**
     * Start playing a note at the specified frequency and velocity.
     * @param frequency Frequency in Hertz.
     * @param velocity Voice amplitude. Recomended range from 0 to 1.
     * @returns A callback that stops playing the note.
     */
    noteOn(frequency: number, velocity: number): () => void;
    /**
     * Trigger panic and release all notes.
     */
    allNotesOff(): void;
}
/**
 * Web audio synth of finite polyphony where the voices are stacked in unison.
 */
export declare class UnisonSynth extends Synth {
    voiceParams?: UnisonVoiceParams;
    voices: UnisonVoice[];
    protected _newVoice(): UnisonVoice;
}
/**
 * Web audio synth of finite polyphony that supports inharmonic timbres.
 */
export declare class AperiodicSynth extends Synth {
    voiceParams?: AperiodicVoiceParams;
    voices: AperiodicVoice[];
    protected _newVoice(): AperiodicVoice;
}
/**
 * Web audio synth of finite polyphony with user-provided audio buffers.
 */
export declare class BufferSynth extends Synth {
    voiceParams?: BufferVoiceParams;
    voices: BufferVoice[];
    protected _newVoice(): BufferVoice;
}