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

Contact us about
your application!

Synth MIDI Note

Controls: Edit Menu >> Synth Controls >> Note
Macro: MIDInote

This selects the MIDI note number, which you can use here as a frequency control with the sound card's built-in synthesizer. MIDI Notes are numbered 0-127, where 69 is 440.000 Hz ("Concert A"). The current note name and frequency are shown above the MIDI Note control.

Please note: Percussion mode is active when Synth MIDI Voice is set to 128. The MIDI Note control becomes a selector for General MIDI Percussion Sounds. These are non-tonal and don't have a particular "note" or frequency, so the name of the selected percussion instrument is shown there instead.

The Standard Musical Note Frequencies section has a list of key names, MIDI note numbers, and frequencies that covers the standard piano keyboard range.

You can compute the frequency of any MIDI note N from

Freq = 440 * 2^((N - 69) / 12).


See also Synthesizer Control Dialog.

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