mildbill Posted October 10, 2004 Share Posted October 10, 2004 does anyone know how keyboards generate release velocity? a discussion about polypressure brought it to mind again. i think for PP, you need a separate sensor for each key, but i was under the impression that release velocity uses the same sensors that are used to generate velocity, except it does it in reverse - the time it takes for a key to move the distance between 2 sensors. if this is true, it doesn't require any extra hardware, and just a minimal amount of extra software to implement it, and i don't understand why more manufacturers don't do it. is this correct? Link to comment Share on other sites More sharing options...
Prague Posted October 10, 2004 Share Posted October 10, 2004 Release velocity should be the same as velocity, just done after a key up command. The velocity level is many times the same as the initial key on velocity. Velocity curves happen over time, though. 0volts to a maximum. A release velocity curve would be a maximum to 0 volts. Aside from the poly/channel issues, no extra hardware is needed. My old Ensoniq VFX-SDII will trigger voices on key up commands. I'll have to look deeper into the velocity issue. Thanks for reminding me. Link to comment Share on other sites More sharing options...
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