在「Explanation of 44.1 kHz CD sampling rate」這邊看到 44.1kHz 的解釋...
這個數字反而是跟 video 有關而設計出來的：
In 60 Hz video, there are 35 blanked lines, leaving 490 lines per frame or 245 lines per field, so the sampling rate is given by :
60 X 245 X 3 = 44.1 KHz
In 50 Hz video, there are 37 lines of blanking, leaving 588 active lines per frame, or 294 per field, so the same sampling rate is given by
50 X 294 X3 = 44.1 Khz.
而後來 44.1kHz 被拿去 CD 規格裡使用而被廣泛應用...