----- Original Message -----
Sent: Tuesday, September 04, 2001 6:23
PM
Subject: Re: OT: Aftertouch
At 6:03 PM -0700 9/4/01, Om_Audio wrote:
I am considering the
Roland A-33 midi keyboard controller- it does not have aftertouch- what is
aftertouch?
Aftertouch (also called "Channel Pressure" or "Key Pressure") is a MIDI
control message that is sent out when you press down on a key. The harder you
press, the higher the value. It can be used to control such things as pitch,
filter cutoff, amplitude, etc. There are actually two kinds of
Aftertouch. Monophonic Aftertouch (Channel Pressure) sends out a single stream
of control messages on a single MIDI channel. If several keys are being
pressed at the same time the highest value is the one being sent. Polyphonic
Aftertouch (Key Pressure) sends a separate control stream for each key on the
keyboard. This is much less common than Channel Pressure.
--
______________________________________________________________
Richard
Zvonar, PhD
(818)
788-2202
http://www.zvonar.com
http://RZCybernetics.com
http://www.cybmotion.com/aliaszone
http://www.live365.com/cgi-bin/directory.cgi?autostart=rz
