/// <reference types="node" />
import * as ref from 'ref-napi';
export declare class Whisper {
    context: ref.Pointer<void>;
    params: any;
    whisperLib: any;
    prompt_tokens: Array<number>;
    static readonly WHISPER_SAMPLE_RATE = 16000;
    static readonly n_samples_step: number;
    static readonly n_samples_len: number;
    static readonly n_samples_keep: number;
    static readonly n_samples_30s: number;
    constructor(dllPath: string, model: string);
    pcm16sto32f(pcm16: Buffer): Buffer;
    prepare(pcm16: Buffer): number[];
    text: string;
    lines: string[];
    pcmf32: Array<number>;
    pcmf32_new: Array<number>;
    transcribe(arr: Array<number>): string;
    transcribe2(arr: Array<number>): {
        text: string;
        partial?: undefined;
    } | {
        partial: string;
        text?: undefined;
    };
    static vad_simple(pcmf32: number[], sampleRate: number, lastMs: number, vadThold: number, freqThold: number, verbose: boolean): boolean;
    static highPassFilter(data: number[], cutoff: number, sampleRate: number): number[];
}