import { TTS } from '../../agents/providers.js';
/** Options for {@link PaplaTTS}. */
export type PaplaTTSOptions = {
    /** Papla API key. Defaults to the `PAPLA_API_KEY` environment variable. */
    apiKey?: string;
    /** Model/voice id. Default `'papla_p1'`. */
    modelId?: string;
    /** Output audio sample rate in Hz. Default `24000`. */
    sampleRate?: number;
};
declare class PaplaTTSImpl extends TTS {
    static readonly displayName = "PaplaTTS";
    _providerName: string;
    apiKey?: string;
    voiceId: string;
    voice: string;
    constructor(opts?: PaplaTTSOptions);
    getRuntimeConfig(): Record<string, any>;
}
export type PaplaTTS = PaplaTTSImpl;
/** Papla text-to-speech (TTS) synthesizer. */
export declare const PaplaTTS: (opts?: PaplaTTSOptions) => PaplaTTS;
export {};