Is it possible to overload methods from unity engine ?

Whats going on everyone.

I've found my self in a situation where it would be beneficial for me to use a float value instead of an int value within the 3rd parameter of the method Microphone.Start(); Currently this method takes four parameters, String, Bool, int, int. What i need is for the 3rd parameter to accept a float instead of an int. The 3rd parameter of Microphone.Start(); represents the length of time that the microphone records and is currently divisible by seconds. The reason why i want to use a float instead of an int is because i need the microphone to record in terms of smaller fragments of time then simply seconds. Hopefully there is some way that i could write an overloaded Microphone.Start(); method. Thanks Guys!

Best Alex