How to change the voice?

Question

Java

Hello. Please tell me how to change the timbre of the tone of the voice of, for example, a young man to a rougher voice like that of Santa Claus, for example) Which of the parameters amplitude frequency phase duration need to be changed in order to get the above result and maybe there are some ready-made libraries for this in Java?

Answer 1

Of course, there are libraries for working with audio:
www.beadsproject.net
https://code.google.com/p/java-audio-utils/
https://github.com/JorenSix/TarsosDSP
But how to change the voice is a more subtle point. Fire up an audio editor like Audacity and try to achieve the desired effect with the available filters, and then transfer the process to the code.