macbook pro intel ventura 13.3.1 audio issue

[tedx]

I'm trying to use tg-timer but am not getting any indication on the GUI that the ticks are being heard. I've tried both a usb watch timergrapher device I bought on aliexpress and the internal mic. I've looked at the sound system setting and played with the input volume but that hasn't made any difference. Any suggestions? Has anyone gotten this to work on an macbook pro Intel running ventura 13.3.1?