Martin LIGHTING DIRECTOR User Manual download pdf (Page 72)

used because MIDI features sixteen channels that can be easily addressed as

hexadecimal $0 to $F. Appendix C has a decimal to hexadecimal conversion table.

Side note: in this manual a $ sign precedes all hexadecimal numbers so as to not confuse

them with decimal numbers. However, the $ sign is not entered in the byte boxes in the MLD

software.

Before listing the MIDI commands, let’s first consider the most common one, MIDI

Note-On, as an example.

STATIC CONTROL EXAMPLE

Suppose what you wanted is for a sampler to play note 100 on channel 3 at a key

velocity of 127 when your performer enters a region of the layer. The first thing to do

is to click on the MIDI enabled box and look up the MIDI Note On command in the list

of MIDI commands section, it is:

9x yy zz

where x is the channel number minus one from $0 to $F (decimal 0 to 15), yy is the

actual note number from $00 to $7F (0 to 127 decimal) and zz is the key velocity from

$00 to $7F (0 to 127 decimal). So:

• you want channel 3 so x is $2 (the channel minus one and then converted to hex),

• you want to play note 100 so yy is $64 (converted to hex)

• you want a key velocity of 127 so zz is $7F (converted to hex)

The final byte boxes would look like this:

Notice that the output string ends at the “command end flag” and all the other byte

boxes are grayed-out because they are not being used. Notice also that the dynamic

control mark (the V hat) has been placed on top of a disabled byte box: this is because

what you want is a static control where no parameters are varied dynamically.

Side note: unless you issue a Note Off command, or leave the region for which this Note On

event is defined, the note might continue playing indefinitely!

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Martin LIGHTING DIRECTOR User Manual Page 72