export declare function synthesize(text: string, options: GnuSpeechOptions): Promise<{
    audioData: any;
    params: any;
}>;
export type GnuSpeechVoiceName = 'male' | 'female' | 'large_child' | 'small_child' | 'baby';
export declare const defaultGnuSpeechOptions: GnuSpeechOptions;
export interface GnuSpeechOptions {
    voice?: GnuSpeechVoiceName;
    tempo?: number;
    controlRate?: number;
    debug?: boolean;
}