Instruction Manual

USB 8 sensor interface / Parameters window
Note on message
N-ON trigger
hi-low
low
0 - 127
This eld enables the user to congure the note on activation level for trigger messages or for
the MSB controller number with a lower threshold.
hi
0 - 127
This eld enables the user to congure the note on activation level for trigger messages or for
the MSB controller number with a higher threshold.
Signal
t
NOT
E ON message
NOT
E OFF message
NOT
E ON
threshold
NOT
E OFF
threshold
t
NOTE ON
t
NOTE OFF
The analogue signal must correspond to an envelope changing with time and which has a
maximum value. 3 parameters need to be specied: note sent, higher threshold, lower thresh-
old. Eobody2 analyses this envelope: once the envelope has reached the higher threshold, a
MIDI note on message (NOTE ON) is generated. The velocity associated with the note is xed
to 127. The note number contained within the message is adjustable by the user. As long as
the envelope stays above a threshold point, named NOTE OFF threshold, the note is main-
tained (no new MIDI message is sent). When the level falls beneath the NOTE OFF threshold
point, a MIDI NOTE OFF message is sent to turn the note off. To sustain the note for a long
period of time, the NOTE
OFF threshold point must
be set on a small value.
Conversely, to make the
note stop shortly after the
peak has been detected,
the NOTE OFF value
must be higher. This type
of message is useful in
using sensors to generate
MIDI notes.