import { STT } from '../../agents/providers.js';
/** Configuration options for the {@link AzureSTT} provider. */
export type AzureSTTOptions = {
    /** Azure Speech key. Falls back to the `AZURE_SPEECH_KEY` env var. */
    speechKey?: string;
    /** Azure Speech region. Falls back to the `AZURE_REGION` env var, then `'eastus'`. */
    speechRegion?: string;
    /** Recognition language code. Default: `'en-US'`. */
    language?: string;
    /** Input audio sample rate in Hz. Default: `16000`. */
    sampleRate?: number;
    /** Enable a phrase list to bias recognition. */
    enablePhraseList?: boolean;
    /** Phrases to bias recognition toward. */
    phraseList?: string[];
    [key: string]: any;
};
declare class AzureSTTImpl extends STT {
    static readonly displayName = "AzureSTT";
    _providerName: string;
    apiKey?: string;
    speechRegion: string;
    language: string;
    sampleRate: number;
    model: string;
    constructor(opts?: AzureSTTOptions);
    getRuntimeConfig(): Record<string, any>;
}
export type AzureSTT = AzureSTTImpl;
/**
 * Azure (Cognitive Services) speech-to-text provider.
 *
 * Creates a configured Azure Speech STT provider for use in a voice agent.
 */
export declare const AzureSTT: (opts?: AzureSTTOptions) => AzureSTT;
export {};