But why sample at an odd number like 44.1 kilohertz ?
但是为什么要采集这个奇怪的44.1千赫频率的声音呢？
One megahertz is the same as one thousand kilohertz .
作为一个兆赫是一千千赫相同。
Radio station frequencies are often given in terms of kilohertz .
电台的频率常常以千赫为单位。
That was partly because it comfortably exceeded the nyquist minimum ( 40 kilohertz ) , but mainly because sony found it handy to do so while developing the cd with philips .
Thus , an audio cd is traditionally made by sampling the analogue sound in the studio at 44.1 kilohertz , to ensure that the digital recording can reproduce the 20-kilohertz sounds at the upper end of human hearing with reasonable fidelity .
