I'm looking for a way to extend certain parts of an exiting audio file to make these parts sound like the where played longer. And I dont want to change play speed or stretch the file. Lets say u have a digital sound file of someone playing a trumpet. And he's playing diffrent tones. Now I want to jump to a certain point in this file and hold this very tone as long as I want. To make it sound like it was played very very long. Without anyone noticing that it was artificialy extended. And I want to do this with not just recordings of instruments.
What technics do you suggest?
Maybe something like granular synthesis or any other synthesis technic?
It would be so awesome if someone could help me with this.
Thanks in advance