import { SynthesisVoice } from '../api/API.js';
import { Timeline } from '../utilities/Timeline.js';
export declare function synthesize(text: string, voiceId: string, language: string, options: ElevenLabsTTSOptions): Promise<{
    rawAudio: {
        audioChannels: Float32Array<ArrayBufferLike>[];
        sampleRate: number;
    };
    timeline: Timeline | undefined;
}>;
export declare function getVoiceList(apiKey: string): Promise<SynthesisVoice[]>;
export interface ElevenLabsTTSOptions {
    apiKey?: string;
    modelId?: string;
    stability?: number;
    similarityBoost?: number;
    style?: number;
    useSpeakerBoost?: boolean;
    seed?: number;
}
export declare const defaultElevenLabsTTSOptions: {
    apiKey: undefined;
    modelId: string;
    stability: number;
    similarityBoost: number;
    style: number;
    useSpeakerBoost: boolean;
    seed: undefined;
};
export declare const supportedLanguagesInMultilingualModels: string[];