added loudness info at the end

    loudness: float,

    fs: Optional[int] = 48000,

    in_meta: Optional[list] = None,

    logger: Optional[logging.Logger] = None,

) -> None:

    """

    Scales audio files to desired loudness

            else:

                audio_obj = audio.fromfile(fmt, file, fs)

            # TODO: just for testing: remove later

            if logger:

                measured_loudness, _ = get_loudness(audio_obj)

                logger.info(f"measured loudness of file {file.name} for condition {file.parent.name}: {measured_loudness}")

            # adjust loudness

            scaled_audio = loudness_norm(audio_obj, loudness)

            # write into file

            write(file, scaled_audio, audio_obj.fs)

            cfg.postprocessing["loudness"],

            cfg.postprocessing["fs"],

            out_meta_splits,

            logger,

        )

    return