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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MIDI Buffer Note Values


Changes: Bvb.n0

MIDI Changes scripts can use individual note values from a Buffer or from live input on the right side of any expression.

These are MIDI note numbers from 0-127, or 255 for silence if there is no note. (0 also acts as silence here, although in normal MIDI usage it would be C-2 = 8.176 Hz.)

You can use a Buffer Note value anywhere a value can appear on the right side of an expression, typically shown as n in Changes command formats. The format to replace the n is Bvb.n0, where v is Voice number 1-8, and b is buffer number 1-4, or else 0 for that voice's live input (including any Note Delay). n0 is the index into the buffer, from 0-255. (For live input, the index is interpreted as "notes ago". See Buffer Copy for more information.)

Buffer Note values allow scripts to change in response to notes being played (or about to be played, or previously played). As an example, a Voice Setup could change the Instrument Number according to note range, perhaps selecting a piccolo for high notes and a tuba for low:

[B10.0>60 I1=72 | I1=58]

In this IF-ELSE statement, B10.0 is the current live input note for Voice 1. If it is above 60 (Middle C), the Voice 1 Instrument is set to 72 (Piccolo), else 58 (Tuba).

For DaqMusiq or KaleidoSynth performances that don't need to track a live input in real-time, you can set a certain Note Delay for each voice. As usual, the 0th index refers to the current note to be played by a voice, but in this case you can use negative index values to peek ahead at upcoming notes.

Note that this command is "read-only" and can only appear on the right side of an expression, or in an IF test. However, it is equivalent to the 8-bit buffer direct access command Bbvb.n0 which can be used on either side of an expression, with the exception that you can't change live input notes (buffer 0).


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

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