This is my first freelance order.
F1-initial frequency, a number with a decimal point, is entered in a string (typical values for example: 5, 10, 20, fractional rarely, but possible) F2-the final frequency, a number with a decimal point, is entered in the string (typical values for example: 500, 2000, fractional rarely, but possible) V-frequency change rate, a number with a decimal point, is entered in the string (typical values for example: 1, 0.5, 0.43)
Speed change type-choose from two options (Oct / min or Hz / min, selectable via radiobutton). The first option means that the frequency grows By m octave per minute (below will be the formula) or by M Hertz per minute. The start button starts the countdown time T (time in the upper line in min: sec) and under the time the frequency value F with one decimal point.
The formula for calculating frequency when you select the "Hz/min.» F = F1 + V*T
The formula for calculating frequency when you select the "Oct/min.» F = F12^(VT/60)
An application that outputs the oscillation frequency according to the law of time.This frequency is displayed on the display.