import type { LoudnessStats } from "../types/audio.js";
export declare function analyzeLoudness(inputPath: string): Promise<LoudnessStats>;
export interface LoudnormMeasured {
    input_i: string;
    input_tp: string;
    input_lra: string;
    input_thresh: string;
    target_offset?: string;
}
export declare function measureLoudnormPass(inputPath: string, targetLufs: number, truePeak: number): Promise<LoudnormMeasured>;
export declare function buildTwoPassLoudnormFilter(measured: LoudnormMeasured, targetLufs: number, truePeak: number): string;