1. Bandspreading improves the sound quality by widening the bandwidth of the audio signal.
带宽扩展通过扩大音频信号的带宽来提高音质。

2. The bandspreading feature on the music player allows you to customize the audio output to your preference.
音乐播放器上的带宽扩展功能可以让你根据自己的喜好定制音频输出。