Hello!
I'm trying to get the last example in this link to work:
http://en.flossmanuals.net/pure-data/audio-tutorials/amplitude-modulation/
The adc function seems to be silent, however qctljack connections show that system capture 1 and 2 are connected with pure data input 0 and 1. Since this is a laptop i'm pretty sure it has a microphone . The input section in jack shows 3 device options and i have tried them all. What might be the cause of this no input signal?