It's not obvious!
Routing MIDI internally requires a 'virtual midi driver' which you can set up with something like MidiYoke http://www.midiox.com/ or LoopMidi http://www.tobias-erichsen.de/software/loopmidi.html
I'm not on Windows so I can't give you anything more specific.
I believe you could make a virtual instrument or effect out of a Pd patch using Camomile https://github.com/pierreguillot/Camomile - then it would appear as a VST instrument in Cakewalk.
Another option would be to route the sound from Pd into an audio channel on Cakewalk but I don't know how internal audio routing works on Windows.
Or (least complicated but maybe less interesting) you could of course just sample the sounds you make in Pd and collage them together in Cakewalk or perhaps load them up as samples in a virtual sampler instrument.
Just in case anyone is having similar problems here's what I've done:
I had an old USB 'iMic' kicking around (USB mic/line in and jack output) which I've plugged in. Selecting that for input and output instead of the built-in mic and output keeps the coreaudiod activity down to a more reasonable 6%. So I assume something is going wrong between Pd, the coreaudiod driver/component thing and the built in mic/output.
@whale-av thanks for your reply. I don't think I have a feedback loop as I only have the standard input/output setup of built-in microphone and built-in speakers with the normal internal soundcard. If I switch the input/output to none in the Pd settings the 'coreaudiod' does stop gobbling the CPU but beyond that I don't know what I can do to sort out the root cause.
When I launch Pd and set the DSP going (even if there is no patch open at all) the Mac Activity Monitor shows 'coreaudiod' suddenly jump to using 20-30% CPU and I notice a high-pitched whining sound coming from the computer. Other audio software does not have this effect. Is this normal? If not does anyone know how I can fix it?
Macbook Pro OSX 10.13.6 with Pd-0.51-4
Here is the beginning of a bookmark collection and general Pd resource in wiki form -
It's not very logical yet (some doubling up and vague categories) and the formatting is still a bit up in the air but it is a 'work in progress'. Anyone who can see some potential in it and wants to contribute can join wikidot and become an editor.
a WAV file is audio data and cannot contain MIDI (Musical Instrument Digital Interface) information.
A midi file, (usually .mid) contains a sequence of midi events - coded messages to be interpreted by midi instruments or software. A midi file can contain information on pitch, velocity, etc
You say the wav file 'contains the midi audio signal' - perhaps you or someone else has used software that renders a midi file as wav audio? If this is the case you need to go back to the original midi file if you want to work with that data.
Online collaborative music system Netpd 2.3.0 has been released!
Get it here: https://www.netpd.org/Download
Lots of updates and improvements plus...
New instruments since last release:
ripple 1: sample-based synthesis similar to soundfonts
ep-mk2: physical model of an e-piano (port of @MikeMorenoDSP ’s ep-mk2)
filtlib: finally a suite of filters (based on mmb)
Another sample from the work-in-progress ...
I thought it would be worth having a category for these more self-contained collections
Modular Systems in Pd
Kraken - Virtual Guitar Effects Pedal Board
Open toolkit for hardware and software interactive art-making systems
Pd Modular Synthesizer
A previous incarnation of Automatonism
any others that should be in there?