频谱图的参数上图是一个 flac 无损文件的频谱图，最上面是这个文件的外在参数，采样率 48kHz、24bit，横轴是时间，纵轴是声音的频率，不同的颜色代表着不同的响度，也就是音量，可以参考图上最右侧的色条；当音量小到 -120db 以下，颜色就是黑色的，表示几乎没有声音。
第一百八十一条 本章下列用语的含义：
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This is the latest iteration of the Magic Keyboard Case, and there are some minor tweaks that weren’t in the original 2020 model. Aside from the aforementioned trackpad that got a size boost, Apple upgraded the palm rest from plastic to aluminum, and it included a function row that makes using your iPad feel more like a MacBook. It features one USB-C port that can be used for power, leaving the tablet’s port available for accessories like add-on storage.
But they also point to something we don’t share with the other new pseudo-intelligences emerging today: machine intelligence.