If you're asking where the 44.1k sample rate originated, it actually predates redbook CD, and appears related to the United States NTSC video standard. Some of the first commercially available digital audio recorders converted the digital signal to a video signal and recorded to video tape. Google brings up the Sony models PCM-F1 and PCM-701ES, but apparently there were earlier models from the late 1970s. I recall reading about it in a hifi magazine at the time. I'm tired of looking, but that should be enough to find details such as how many bytes were on each horizontal scan line and exactly how it relates to the sample rate.
On Tue, 4 Jul 2023 at 12:49, Yisheng Jiang <[email protected]> wrote: > > Sent from my iPhone
