export interface LoudnessConfig {
    readonly targetRms: number;
    readonly maxGainStep?: number;
    readonly rmsSmoothing?: number;
    readonly ceiling?: number;
}
export interface LoudnessState {
    gain: number;
    runningRms: number;
}
export declare function createLoudnessState(): LoudnessState;
export declare function normalizeLoudness(pcm: Int16Array, state: LoudnessState, cfg: LoudnessConfig): Int16Array;
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