I am developing an audio application for macOS that I would like to use to analyse the notes in a given section of music.
I am happy to work from an analysis of the frequencies in a given section then translate these frequencies to musical pitch if needed.
Is there an existing Audio Unit that will help me accomplish this?
If this is too broad a question, please suggest a way of identifying a suitable Audio Unit. A search on the web turns up very many spectrum analyser Audio Units, so advice on identifying one and what attributes I should be looking for would be appreciated.
If this is the wrong place to be asking about Audio Units at all, also please advise.