Hi, welcome to my first tutorial!
Today I will teach you how to make a high pitched whistle sound in Fruity Loops.

Let's start by opening fruity loops.

Now start with an empty template.


Now add a 3x Osc


Now you need to right-click on the c2 so it changes from c5 to c2, this will make it higher pitched, if you don't understand look at the picture.


Now put the volume knob all the way down on Osc 2 and Osc 3.


Now go to the misc tab and tick Porta and Mono in the Polyphony section.


If you did it right, play a note on the keyboard and it should make a different noise.


Here is a little sound file with it.
File Download: Whistle_tut trance sound.