/// <reference types="node" />
import { ReadableStream } from "node:stream/web";
declare class Transcriber {
    private session;
    private minLength;
    private maxLength;
    private numReturnSequences;
    private lengthPenalty;
    private repetitionPenalty;
    private sampleRate;
    private constructor();
    /**
     * A factory method used to generate instances of whisper sessions.
     *
     * @param sampleRate - The sample rate for your input audio buffer.
     * @param uri - The URL of PATH where the whisper model should be loaded from.
     * @returns - An initilized instance of the Whisper model for transcription.
     */
    static create(sampleRate: number, uri?: string): Promise<Transcriber>;
    /**
     * Converts a readable stream of raw audio channel data to text.
     *
     * @param audio - A stream of decoded PCM data chunks from an audio source.
     * @returns - A readable stream that contains a transformer used to transcribe audio to text.
     */
    transcribe(audio: ReadableStream<Float32Array>): Promise<ReadableStream<any>>;
    /**
     * Processes a chunk of raw decoded audio in steps, this funciton
     * is recursive and will keep processsing audio until the data
     * is empty. The results of these recursive calls are combined
     * into a single transcribed string.
     *
     * @param audio - Float32Array of a decoded audio stream.
     * @param idx - The starting position for transcription.
     * @param pos - The current position of a transcription.
     * @param results - The audio transcribed as a string.
     * @returns - A string containing all transcribed audio as text.
     */
    private processAudio;
    private run;
}
export { Transcriber };