import { STT } from '../../agents/providers.js';
import type { SarvamAISTTModel } from './models.js';
/**
 * Options for {@link SarvamAISTT}.
 *
 * Passing an unknown option throws a `TypeError`.
 */
export type SarvamAISTTOptions = {
    /** Sarvam AI API key. Defaults to the `SARVAM_API_KEY` environment variable. */
    apiKey?: string;
    /** Transcription model id. Default `'saaras:v3'`. */
    model?: SarvamAISTTModel | string;
    /** Spoken language code. Default `'en-IN'`. */
    language?: string;
    /** Sample rate (Hz) of the audio sent in. Default `48000`. */
    inputSampleRate?: number;
    /** Sample rate in Hz that input audio is resampled to. Default `16000`. */
    outputSampleRate?: number;
    /** Decoding mode. Default `null` (provider default). */
    mode?: string | null;
    /** Use a more sensitive VAD profile. Default `null`. */
    highVadSensitivity?: boolean | null;
    /** Emit flush signals between turns. Default `null`. */
    flushSignals?: boolean | null;
    /** Translate transcripts to the target language. Default `false`. */
    translation?: boolean;
    /** Optional prompt to bias transcription. Default `null`. */
    prompt?: string | null;
    /** Input audio codec. Default `'pcm_s16le'`. */
    inputAudioCodec?: string;
    /** Emit VAD signals. Default `true`. */
    vadSignals?: boolean | null;
    /** VAD probability above which a frame counts as speech. Default `null`. */
    positiveSpeechThreshold?: number | null;
    /** VAD probability below which a frame counts as non-speech. Default `null`. */
    negativeSpeechThreshold?: number | null;
    /** Minimum frames of speech to start a turn. Default `null`. */
    minSpeechFrames?: number | null;
    /** Minimum speech frames for the first turn. Default `null`. */
    firstTurnMinSpeechFrames?: number | null;
    /** Audio frames of padding prepended before speech. Default `null`. */
    preSpeechPadFrames?: number | null;
    /** Minimum speech frames required to interrupt. Default `null`. */
    interruptMinSpeechFrames?: number | null;
    [key: string]: any;
};
declare class SarvamAISTTImpl extends STT {
    static readonly displayName = "SarvamAISTT";
    _providerName: string;
    apiKey?: string;
    model: string;
    language: string;
    sampleRate: number;
    inputSampleRate: number;
    outputSampleRate: number;
    mode: string | null;
    highVadSensitivity: boolean | null;
    flushSignals: boolean | null;
    translation: boolean;
    prompt: string | null;
    inputAudioCodec: string;
    vadSignals: boolean | null;
    positiveSpeechThreshold: number | null;
    negativeSpeechThreshold: number | null;
    minSpeechFrames: number | null;
    firstTurnMinSpeechFrames: number | null;
    preSpeechPadFrames: number | null;
    interruptMinSpeechFrames: number | null;
    constructor(opts?: SarvamAISTTOptions);
    getRuntimeConfig(): Record<string, any>;
}
export type SarvamAISTT = SarvamAISTTImpl;
/** Sarvam AI speech-to-text (STT) transcriber. */
export declare const SarvamAISTT: (opts?: SarvamAISTTOptions) => SarvamAISTT;
export {};