@donp wrote:
… with an uncalibrated crystal oscillator, that should also show as the clock keeping bad time.
I think we all here assume that the Fuze is designed with a crystal oscillator, and therefore should have a playback speed that is accurate to about 0.001%. This is the typical accuracy of a crystal clock, and is about a thousand times more accurate that any human can distinguish as a pitch.
…but… There are other ways to design electronics, and the cost and physical size of adding a crystal oscillator may not have been deemed necessary.
In my experience generating accurate time bases with electronic circuits based on resistors and capacitors is very hard to do - and can be considerably worse than equipment of 20 years ago that based playback speed on electrical motors and rubber belts.
