I'm working in an audio project. My goal is to count the number of people who spokes in an audio file. We can consider that we already removed the noise from that audio.(for example if there is two people talking in the audio the program can return 2 if there is three people talking in that audio the program will return 3...). I don't need speech recognition; I just want to know how many people talks. What is the best whey to solve this problem.