import { TTS } from '../../agents/providers.js';
/** Configuration options for the Murf AI text-to-speech (TTS) provider. */
export type MurfAITTSOptions = {
    /**
     * Murf AI API key. Defaults to the `MURFAI_API_KEY` environment variable
     * when not provided.
     */
    apiKey?: string;
    /**
     * Voice ID used for synthesis (e.g. a Murf voice such as `en-US-natalie`).
     * Defaults to `'en-US-natalie'`.
     */
    voice?: string;
    /**
     * Murf AI synthesis model. Defaults to `'Falcon'`.
     */
    model?: string;
    /**
     * Output audio sample rate in Hertz (Hz). Defaults to `24000`.
     */
    sampleRate?: number;
};
declare class MurfAITTSImpl extends TTS {
    _providerName: string;
    apiKey?: string;
    voiceId: string;
    voice: string;
    model: string;
    constructor(opts?: MurfAITTSOptions);
    getRuntimeConfig(): Record<string, any>;
}
/** Instance type of the Murf AI text-to-speech (TTS) provider. */
export type MurfAITTS = MurfAITTSImpl;
/**
 * Murf AI text-to-speech (TTS) provider.
 *
 * @param opts - Provider configuration; see {@link MurfAITTSOptions}.
 */
export declare const MurfAITTS: (opts?: MurfAITTSOptions) => MurfAITTS;
export {};