Apologise for the novice question, but I'm trying to work purely with C++ & libpd (OSX desktop) and have been working with samples/cppTest/cpptest.xcodeproj from https://github.com/libpd/libpd.

I can build the project fine (libpd & the cppTest app) but when it opens the test patch (or any for that matter) I do not get any sound. The patch themselves works fine. Print statements are ok and sending & receiving messages seem ok. But I even built a patch which just *~ two phasors, and couldn't hear it when I used the cppTest code to open my patch. I don't think there is anything wrong with libpd nor my sound card as I compiled & ran the iOSTest project (deployed to a simulator iPhone) and that worked (fuzzy audio, but sound came through).

Anyone have any good ideas? I know that with the output AudioUnit on OSX has a default volume of 0 (unlike iOS which has default of 1.0 for volume) so would it be something like that?