Apply window to a filter

Lets say i have a .wav file....how can i apply a filter to it with different window types (Hanning, Hamming) and play it again?

Answer 1

[Walter Roberson]

wavread() can read the file.

Once you have processed the information, you can play the new samples with sound()

[Raldi]

I know that ... i had problems editing the sound though!!! i can apply i filter to it.....but i dont know how to choose between the different window types.