export interface AudioSegment {
    audio: Float32Array;
    start: number;
    end: number;
}
export declare class AudioRecorder {
    private vad;
    private mediaRecorder;
    private audioChunks;
    private isRecording;
    private onSegmentCallback?;
    private onTranscriptCallback?;
    private baseUrl;
    private token;
    private currentStream;
    constructor(baseUrl: string, token: string);
    initialize(): Promise<void>;
    startRecording(onSegment?: (segment: AudioSegment) => void, onTranscript?: (transcript: string) => void): Promise<MediaStream | undefined>;
    stopRecording(): void;
    private processAudioSegment;
    private float32ArrayToWav;
    private transcribeAudio;
    blobToBase64(audioBlob: Blob): Promise<string>;
    destroy(): void;
}
export declare class TTSManager {
    private synth;
    private currentUtterance;
    private isEnabled;
    constructor();
    enable(): void;
    disable(): void;
    speak(text: string, options?: {
        rate?: number;
        pitch?: number;
        volume?: number;
        voice?: SpeechSynthesisVoice;
    }): void;
    stop(): void;
    isSpeaking(): boolean;
    getVoices(): SpeechSynthesisVoice[];
    private cleanTextForSpeech;
}