import * as ort from 'isomorphic-onnxruntime';
/**
 * SuperVAD engine that manages the ONNX session, runs inference and keeps buffer of the last 10 tokens.
 * This class is not concurrency-safe and should not be used in parallel.
 */
export declare class SuperVADEngine {
    /**
     * Number of samples per token
     */
    static readonly TOKEN_SIZE = 320;
    /**
     * Create from existing inference session.
     * @param session inference session
     * @returns engine
     */
    static createFromSession(session: ort.InferenceSession): SuperVADEngine;
    /**
     * Create from path or URL.
     * @param pathOrUrl path or URL
     * @param options session options
     * @returns engine
     */
    static create(pathOrUrl: string, options?: ort.InferenceSession.SessionOptions): Promise<SuperVADEngine>;
    /**
     * Create from buffer.
     * @param buffer buffer
     * @param options session options
     * @returns engine
     */
    static createFromBuffer(buffer: ArrayBufferLike, options?: ort.InferenceSession.SessionOptions): Promise<SuperVADEngine>;
    private _buffer;
    private _session;
    private constructor();
    /**
     * Get the underlying inference session.
     */
    get session(): ort.InferenceSession;
    /**
     * Run inference on the given audio token.
     * @param token audio token
     * @returns probability of the token being speech
     */
    predict(token: Float32Array): Promise<number>;
    /**
     * Release resources.
     */
    destroy(): void;
}