Audio signal processing method and apparatus for controlling loudness level

The invention relates to an audio signal processing method and apparatus for controlling a loudness level. An audio signal processing apparatus includes: a receiver for receiving an input audio signal; a processor for generating loudness metadata corresponding to the input audio signal; and an output unit for transmitting the loudness metadata generated by the processor. The processor is configured to acquire loudness information analyzed from the input content, acquire loudness information about the input audio signal by measuring loudness of the input audio signal, generate loudness metadata by converting the loudness information, and generate loudness metadata based on the loudness metadata. And transmitting, by an output unit, the generated loudness metadata to an output device to output the input audio signal. 本公开涉及用于控制响度级的音频信号处理方法和装置。一种音频信号处理设备包括：接收器，其用于接收输入音频信号；处理器，其用于产生对应于输入音频信号的响度元数据；以及输出单元，其用于传输由处理器生成的响度元数据。处理器被配置为获取从输入内容分析出的响度信息，通过测量输入音频信号的响度来获取关于输入音频信号的响度信息，通过转换响度信息来生成响度元数据，以及通过输出单元将所生成的响度元数据传输到输出