/**
 * AWS Polly Configuration Constants
 * Centralized configuration for all AWS Polly-related defaults
 */
export declare const AWS_POLLY_DEFAULTS: {
    readonly VOICE_ID: "Matthew";
    readonly ENGINE: "generative";
    readonly OUTPUT_FORMAT: "mp3";
};
export declare const KNOWN_WORKING_COMBINATIONS: readonly [{
    readonly voiceId: "Matthew";
    readonly engine: "generative";
}];
export declare const AWS_POLLY_CONFIG: {
    readonly SUPPORTED_ENGINES: readonly ["generative", "neural", "standard"];
    readonly SUPPORTED_FORMATS: readonly ["mp3", "ogg_vorbis", "pcm"];
    readonly SUPPORTED_VOICES: {
        readonly MALE: readonly ["Matthew", "Justin", "Joey"];
        readonly FEMALE: readonly ["Joanna", "Kendra", "Kimberly"];
    };
};
export type PollyEngine = typeof AWS_POLLY_CONFIG.SUPPORTED_ENGINES[number];
export type PollyFormat = typeof AWS_POLLY_CONFIG.SUPPORTED_FORMATS[number];
export type PollyVoice = typeof AWS_POLLY_CONFIG.SUPPORTED_VOICES.MALE[number] | typeof AWS_POLLY_CONFIG.SUPPORTED_VOICES.FEMALE[number];
export declare const DEFAULT_POLLY_REQUEST: {
    readonly voiceId: "Matthew";
    readonly engine: "generative";
    readonly outputFormat: "mp3";
};