Take a look at MIDI Tuning Standard. Theoretically (of course, if special tuning messages are implemented) it is possible to set any pitch for any not...
Although pitch bend range normally is +/- 2 semitones, potentialy it may be full 128 semitones (you can try to set it: "Bn 64 00 65 00 06 7F 26 7F". I...
Some synthesizers use more complex envelope generation. That is (DAHDSR, for example): note on - delay (no sound, what you need indeed!) - attack (vol...