the most detailed HP41 beep analysis I could find is there: https://www.hpcalc.org/details/7826
However, the duration of each tone is not clearly announced. Is it 0,28s?
? BEEP = .. ?
..
* TONE 7 = 629 Hz for 0,28s
* TONE 5 = 394 Hz for 0,28s
* TONE 8 = 788 Hz for 0,28s
* TONE 7 = 629 Hz for 0,28s
..
Any advice is welcome.