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!

Pitch Freq Axis (Notes/Freq/MIDI)

Controls: Sgram/PT Dialog >> Notes/Freq/MIDI
Macro: PitchYaxis

This button changes from Notes to Freq to MIDI on successive presses, controlling the vertical axis of the Spectrogram Pitch Track display.

Notes mode shows letter and octave designations. The A above Middle C would be shown as A4.

Freq shows frequency, such as 440.0 for the above note. Frequencies are more convenient than notes when you are trying to adjust the eXpand Max and Min frequency range or the Track Max and Min Frequencies to best fit the range of your input signal.

MIDI shows the equivalent MIDI note number, which would be 69 for the above note. MIDI supports note numbers from 0 (C-1 = 8.17575 Hz) to 127 (G9 = 12543.852 Hz). The display will show values above 127 for higher frequencies, even though these can not be directly converted to MIDI by the Pitch-to-MIDI converter. Instead, you must use the +/-Octave control to shift them into range.

MIDI note numbers are especially useful when you are adjusting MIDI Voice Range Min and Max limits.


Macro Notes:

PitchYaxis=0 sets Notes mode to show letters and octave numbers.

PitchYaxis=1 sets Freq mode.

PitchYaxis=2 sets MIDI note number mode.


See also Pitch Track Toolbox - Overview, Spectrogram / Pitch Track Controls, Spectrogram / Pitch Track (Sgram/PT)

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