import { Middleware } from '../types/middleware';
import { IAIProvider } from '../types';
export declare class SpeechMiddleware implements Middleware {
    private apiKey;
    private userId;
    private maleVoice;
    private femaleVoice;
    private aiProvider;
    constructor(aiProvider: IAIProvider);
    process(response: any): Promise<any>;
    private speakText;
    private convertToSpeakableSentences;
    private getNonce;
    private speakSentence;
}