I need to sync arpeggiator in my synthesizer with metronome sound (audio in). It does not need to be perfectly synced. Do you know it is possible to do such a patch like this. What object should I use to analyze incoming audio? Up till now I have been doing only midi patches, so audio in pd is quite new for me. I need to use only vanilla version because I'm going to use this patch on ipad (MobMuPlat). Can anybody help me??

Hi, I'm trying to use cheap aliexpress usb switch that is recognized as a keyboard. Everything works on computer but when I copy my patch to iOS nothing happens. I tried keyup, key and keyname objects and neither worked.
Anybody knows how to deal with it?
regards