Channel Message; Channel Message Overview; Send Channel; Receive Channel - Casio PX-150 Manual

Part II

Channel Message

4

Channel Message Overview

4.1

Send Channel

For information about the MIDI channels of the channel messages that are sent when this Instrument is
played, see 1.2.3 Part Assignments(PX-150,PX-750,PX-850,PX-1200GP, AP-250,AP-450) and 1.2.4
Part Assignments(PX-350M, AP-650M) . Note, however, that the MIDI channel of the performance
information that corresponds to the keyboard main part can be changed by the Keyboard Channel
setting value.
4.2

Receive Channel

For information about the MIDI channel numbers of channel messages received by each part, see 1.2.3
Part Assignments(PX-150,PX-750,PX-850,PX-1200GP, AP-250,AP-450) and 1.2.4 Part Assignments(PX-
350M, AP-650M) . The MIDI channel number of a channel message that changes DSP settings also
coincides with the MIDI channel of the part using the DSP. A channel message is not received by a part
that is turned off by the Part Enable Parameter value explained under
4.3

Instrument Velocity Resolution

The upper seven bits of the 14-bit resolution correspond to the Note On/Off message, while the lower
seven bits correspond to the High Resolution Velocity Prefix message. (Note1)
Note On/Off
Upper 7 bits
The initial default value for the lower 7 bits is 00H. Receipt of a High Resolution Prefix message
causes the lower seven bits to be set, but note on/off is not performed.
Receipt of a Note On/Off message causes the upper seven bits to be set with note on/off performed
with 14-bit resolution Velocity.
The High Resolution Velocity Prefix message corresponds the message immediately following the Note
On/Off message, and the lower seven bits are cleared to 00H immediately following note on/off by the
Note On/Off message. 7-bit resolution note on/off using only the Note On/Off message also continues
to be supported.
For details about each message, see "5 Note Off", "6 Note On", and "8.17 High Resolution Velocity
Prefix".
:
Note1 The PX-150,PX-750, AP-250, and PX-350M do not support Note Off Velocity. For these models, Velocity for send
Note Off messages is a fixed value (40H). Velocity for receive Note Off messages is ignored. The High Resolution Velocity Prefix
message is not sent or received for a Note Off message.
High Resolution Velocity Prefix
Lower 7 bits
14bits
9
19.6 Part Parameter .