CS9236

DS214PP11

19

Control Change Messages

MODULATION WHEEL (CONTROLLER 1)

BnH

01H

vvH

n = MIDI channel number

0 - FH (1 - 16)

vv = modulation depth

00 - 7FH (0 - 127)

In the CS9236, the MODULATION WHEEL message (MIDI Controller 1) is used to control the pitch modulation (vibrato)

level on a specified channel. The MODULATION WHEEL depth value is summed with the current CHANNEL PRESSURE

value and with the default modulation level defined for the selected instrument on the specified channel to determine the

actual vibrato level applied to the sound. The MODULATION WHEEL at maximum depth value will contribute a modu-

lation (vibrato) depth of 50 cents. The response curve is linear. The total depth, resulting from CHANNEL PRESSURE,

MODULATION WHEEL, and default modulation level, may be as high as one semitone. The MODULATION WHEEL

affects all notes playing on the specified channel. Pitch modulation in the CS9236 is implemented using independent low

frequency oscillator (LFO) implementations for each note.

Some of the instruments implemented in the CS9236 include a default pitch envelope (the pitch of a note begins slightly

sharp or flat, and then ramps to the final pitch for the note). For notes with default pitch envelopes, pitch modulation (vibrato)

will begin only after the pitch envelope has reached final pitch.

DATA ENTRY (CONTROLLERS 6 and 38)

BnH

06H

mmH

BnH

26H

llH

n = MIDI channel number

0 - FH (1 - 16)

mm = data value MSB for specified RPN (see REGISTERED PARAMETER NUMBER description)

ll = data value LSB for specified RPN (see REGISTERED PARAMETER NUMBER description)

MIDI “Registered Parameter” data is transmitted to the CS9236 using controller numbers 100 (Registered Parameter LSB),

101 (Registered Parameter MSB), 6 (Data Entry MSB), and 38 (Data Entry LSB). To transfer parameter data to the CS9236,

the parameter number for the parameter to be updated is first selected using MIDI Controllers 100 and 101, and then the data

value for the selected parameter is transmitted using controller numbers 6 and 38. See description of REGISTERED PA-

RAMETER NUMBER (Controllers 100 and 101).

VOLUME (CONTROLLER 7)

BnH

07H

vvH

n = MIDI channel number

0 - FH (1 - 16)

vv = volume

00 - 7FH (0 - 127)

The VOLUME message (MIDI Controller 7) is used in conjunction with the MIDI EXPRESSION message (Controller 11)

to control the overall volume of notes on a specified MIDI channel. The VOLUME and EXPRESSION curves are described

by the following equation:

Attenuation from full scale (dB) = 40 ln ((VOLUME_value * EXPRESSION_value) / (127^2))

The CS9236 default value for VOLUME is 100.