import { TTS } from '../../agents/providers.js';
/** Configuration options for the {@link AWSPollyTTS} provider. */
export type AWSPollyTTSOptions = {
    /** AWS access key ID. Falls back to the `AWS_ACCESS_KEY_ID` env var. */
    awsAccessKeyId?: string;
    /** AWS secret access key. */
    awsSecretAccessKey?: string;
    /** Optional AWS session token for temporary credentials. */
    awsSessionToken?: string;
    /** AWS region. Default: `'us-east-1'`. */
    region?: string;
    /** Polly voice ID. Default: `'Joanna'`. */
    voice?: string;
    /** Polly synthesis engine, e.g. `'neural'` or `'standard'`. Default: `'neural'`. */
    engine?: string;
    /** Speaking speed multiplier. */
    speed?: number;
    /** Voice pitch adjustment. */
    pitch?: number;
};
declare class AWSPollyTTSImpl extends TTS {
    static readonly displayName = "AWSPollyTTS";
    _providerName: string;
    apiKey?: string;
    voiceId: string;
    voice: string;
    region: string;
    engine: string;
    constructor(opts?: AWSPollyTTSOptions);
    getRuntimeConfig(): Record<string, any>;
}
export type AWSPollyTTS = AWSPollyTTSImpl;
/**
 * AWS Polly text-to-speech provider.
 *
 * Creates a configured AWS Polly TTS provider (24 kHz output) for use in a voice agent.
 */
export declare const AWSPollyTTS: (opts?: AWSPollyTTSOptions) => AWSPollyTTS;
export {};