Midi Guitar Help!, playing non-sustained sounds e.g. piano Options

[vic_peacock]

Dear friends,

I would like to ask your help to solve a problem I noticed while playing "naturally decayed" synth or sampled sounds like Piano, guitar, etc..

In this type of instrument, when the key is pressed the sound attacks and, while the key is pressed the sound smoothly decays. In contrast, when the key is released the sound stops.

This type of dynamics is not well simulated by my MIDI guitar converter Roland GI-20. I don't know if it is a general problem. The dynamics is more suited for wind or string
instrument such as flute or violin. The attack is ok. The problem is with sustain. While the guitar string is vibrating the controlled sound is "sustained", even for sounds like piano.
When the string vibration reaches a lower threshold, the sound is released. In the case of piano the sound ends abruptly.

I don't see any real difference between a guitar string picked and a piano string hammered. So, I believe that the same dynamics should apply for both types of instruments. This would allow us to play the piano-like sound more naturally with a MIDI guitar.

Do you have any idea to overcome this annoying problem? Do you know what type of control messages are sent by the Roland GI-20, and how it is possible to modify/filter the MIDI messages sent by the GI-20.

Thank you in advance.

Best,

Vincenzo