import { TTS } from '../../agents/providers.js';
/** Configuration options for the {@link CambAITTS} provider. */
export type CambAITTSOptions = {
    /** Camb.ai API key. Falls back to the `CAMBAI_API_KEY` env var. */
    apiKey?: string;
    /** Numeric voice ID. Default: `147320`. */
    voice?: number;
    /** Synthesis model. Default: `'mars-pro'`. */
    model?: string;
    /** Output audio sample rate in Hz. Default: `24000`. */
    sampleRate?: number;
};
declare class CambAITTSImpl extends TTS {
    static readonly displayName = "CambAITTS";
    _providerName: string;
    apiKey?: string;
    voiceId: number;
    voice: number;
    model: string;
    constructor(opts?: CambAITTSOptions);
    getRuntimeConfig(): Record<string, any>;
}
export type CambAITTS = CambAITTSImpl;
/**
 * Camb.ai text-to-speech provider.
 *
 * Creates a configured Camb.ai TTS provider for use in a voice agent.
 */
export declare const CambAITTS: (opts?: CambAITTSOptions) => CambAITTS;
export {};