CD player clock之謎

PS audio這篇產品介紹中有這麼一段

In a standard CD player or Transport, the master clock is synchronized to the optical disc reading mechanism. This means you are basically relying on a mechanical spinning mechanism and all of its correction systems to give you a perfectly stable, fixed clock to feed the DAC. It does not work and it is not stable.

這段解釋了之前關於CD player的疑問，只可惜沒找到一份CD player chipset的datasheet來看看是不是真的這麼一回事...