I've tried a few different programs, and in all of them, whenever I try to send a pitch value through noteout, the pitch value gets rounded up or down to a value in 12-tone equal temperament. I'm not sure if the problem is with Puredata or all of the programs I've tried using. Either way, I would like to know what to do to fix this, whether that means changing something in Puredata or switching to a soundfont player that correctly handles all midi notes.

EDIT: I did some research, and apparently MIDI is (stupidly) designed to round notes to 12TET pitch values, the only way to get around this being pitch bends. So somehow I'm going to have to get pitch bend values for every note that plays at any given moment and attach each pitch bend value to the correct note. I'm not sure if that's even going to be realistically possible. It will probably require me to give every note a unique MIDI channel, and only 16 notes at a time will be allowed.

EDIT 2: Puredata is refusing to send pitch bend messages. Bendout does nothing when sent to a MIDI channel with a note.

@Polaris Hey! You seem to try to do the same thing as I want to. Found a solution or new ideas? Cheers!

You can find synths that don't necessarily use the 12 tone equal temperament, in ableton live for instance. In this case you just use MIDI values that don't refer to the usual pitches. But I think the best way to work on such things is to calculate your frequencies and do the synthesis all in Pure Data.

Pd doesn't have a microtonal noteout. Its noteout only deals with "integers". You can check that in noteout's help...it says "(integer) MIDI note number (0-127)". A microtonal noteout object should accept a floating point value, select a MIDI channel, and transmit the floating point value as a MIDI pitch bend, and then output the note...or sthg like that. But there is not such an object yet.

So you need a mapper, perhaps Scala. This means: Pd > Scala > some synth in some software. Scala or any other mapper becomes the translator. (And you also need to make sure that your destination synth accepts microtonality).

The following page might guide you, non-standard scale/tuning playback via midi: http://www.matthiaskronlachner.com/?p=817

I haven't tried that kind of connection, I only know Scala (which I have used sporadically). But, with a bit of patience, you might achieve what you want.