Daqarta
Data AcQuisition And Real-Time Analysis
Scope - Spectrum - Spectrogram - Signal Generator
Software for Windows
Science with your Sound Card!
The following is from the Daqarta Help system:

Features:

Oscilloscope

Spectrum Analyzer

8-Channel
Signal Generator

(Absolutely FREE!)

Spectrogram

Pitch Tracker

Pitch-to-MIDI

DaqMusiq Generator
(Free Music... Forever!)

Engine Simulator

LCR Meter

Remote Operation

DC Measurements

True RMS Voltmeter

Sound Level Meter

Frequency Counter
    Period
    Event
    Spectral Event

    Temperature
    Pressure
    MHz Frequencies

Data Logger

Waveform Averager

Histogram

Post-Stimulus Time
Histogram (PSTH)

THD Meter

IMD Meter

Precision Phase Meter

Pulse Meter

Macro System

Multi-Trace Arrays

Trigger Controls

Auto-Calibration

Spectral Peak Track

Spectrum Limit Testing

Direct-to-Disk Recording

Accessibility

Applications:

Frequency response

Distortion measurement

Speech and music

Microphone calibration

Loudspeaker test

Auditory phenomena

Musical instrument tuning

Animal sound

Evoked potentials

Rotating machinery

Automotive

Product test

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your application!

Changes Script Direct MIDI Command


Changes: M=n

(Advanced users only.)

MIDI synthesizers have many more commands and options than are currently supported by Pitch-to-MIDI controls or specific Changes script commands.

In addition to standard MIDI commands, there are also special "System Exclusive" commands that may differ on each synthesizer.

If you are familar with the MIDI command structure, this Direct MIDI command allows you to take control.

The MIDI Changes script command format is M=n, where n is the MIDI command sequence expressed as a number. This is most easily dealt with in hexadecimal notation.

MIDI commands are typically 3 bytes long, and most MIDI references list these bytes in the order they are sent to the MIDI controller. For example, the Reverb Level command might be shown as "Bn, 5B, xx".

The n value represents the MIDI channel number, equivalent to the Pitch-to-MIDI Voice number. MIDI supports 16 channels, but values are 0-based so n ranges from 0 to F hex. The first byte of the command thus may range from B0 to BF hex.

The xx value is the value to be set, which must be limited to 0-127 decimal (0-7F hex).

So to set Voice 1 Reverb Level to 15 (0F hex), the hex command bytes would be B0, 5B, 0F.

However, when these bytes are combined into a single value the low byte is the one that is sent first, so the proper hex value to send would be 0F5BB0. To tell the Changes script that this is a hex value, you must precede it with 'h', so the full script command would be:

M=h0F5BB0

Note: You should be careful when including Direct MIDI commands in Changes scripts that will be Saved and shared with others as a MIDI Setup File. Their synthesizers might not support the same commands that yours does. You may want to test on the default Microsoft GS Wavetable synthesizer as the likely "lowest common denominator". (Note that the above Reverb Level command does not work on that synth.)


See also Changes Script Overview, Changes Script Editor, MIDI Voice Setup Dialogs, Pitch-to-MIDI dialog, Pitch Track Toolbox - Overview

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