I want to make a simulations in math lab for my project by using simulink. My project is about 'pitch correction with pitch synchronous overlap add (PSOLA) method'. It is about how the voice can be change or modified to other voice. It is the process of correcting the intonation of an audio signal without affecting the sound aspects of the other. I have no idea with the topic and i hope that somebody can help me and guide me by making the project.