M-Audio EQMan Инструкция по эксплуатации онлайн [21/31] 18959

Programs 1 through 16 are the user-defined programs, and program 0

is always an EQ-Flat (bypass) setting. Program 0 is hard-coded and

may not be modified.

Volume Control and Pan Messages

The EQMan driver accepts Volume and Pan Controller messages to

set the output levels of the left and right channels. The standard pan

values range from 0 to 127 with 0 being hard-left and 127 being hard-

right. The overall volume is set by sending a volume controller

message with a value in the range of 0 to 127, with 127 being the

loudest setting and 0 the quietest. In order for the pan and volume

settings to take effect, they must be written on the proper MIDI

channel, that which is set up in the EQMan software driver.

Control Change Messages

The EQMan EQ bands may be set individually or in groups through

MIDI Control Change messages. The EQMan implementation is

fairly flexible and allows you to assign any MIDI controller number

102 through 119 (these are defined by the MIDI specification as user-

defined) to any band of the EQMan EQ section. This assignment is

done in the Windows driver’s Advanced Setup dialog box. Once the

assignments are made, any MIDI program can write a control change

message to the EQMan on the proper MIDI channel (also set up in the

driver Advanced Setup dialog) and control the EQ in real time! When

sending a control change message, the actual setting should be in the

range of 0 to 127, which refer to -12dB and +12dB, respectively. 0

dB is 64.

When assigning control numbers to EQ bands in the driver Advanced

Setup dialog box, feel free to experiment with grouping EQ bands by

controller number. The factory default configuration assigns the same

controller number to a left frequency band as it does the corresponding

right side band. This allows both the right and left band to be set

simultaneously by the same controller message. You may assign

totally different controller numbers to these bands and make them

completely independent if you wish.

System Exclusive (Sysex) Messages

System Exclusive messages are used primarily in non-real time to

setup or acquire information from the EQMan. For instance, your

sequencer may allow you to request a dump of the entire contents of

EQMan Rom. The request is made in the form of a sysex message.

In turn, the data dumped from the EQMan back into your sequencer

program is also in the form of a sysex message. Sysex messages may

be stored as a part of a standard MIDI song file and used by the

sequencer to initialize the EQMan to a specific state for use with that

particular song.