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:



Spectrum Analyzer

Signal Generator

(Absolutely FREE!)


Pitch Tracker


DaqMusiq Generator
(Free Music... Forever!)

Engine Simulator

LCR Meter

Remote Operation

DC Measurements

True RMS Voltmeter

Sound Level Meter

Frequency Counter
    Spectral Event

    MHz Frequencies

Data Logger

Waveform Averager


Post-Stimulus Time
Histogram (PSTH)

THD Meter

IMD Meter

Precision Phase Meter

Pulse Meter

Macro System

Multi-Trace Arrays

Trigger Controls


Spectral Peak Track

Spectrum Limit Testing

Direct-to-Disk Recording



Frequency response

Distortion measurement

Speech and music

Microphone calibration

Loudspeaker test

Auditory phenomena

Musical instrument tuning

Animal sound

Evoked potentials

Rotating machinery


Product test

Contact us about
your application!

Spectrum Cursor Track Dialog

Controls: Spectrum Dialog >> Track
Macros: SpectTrackDlg, SgTrackDlg

This button opens the Spectrum Track dialog, which allows the solid cursor to be automatically positioned over the largest spectral peak. The button that toggles the Track option is at the top of the dialog. There are also controls that allow you to limit the tracking to peaks above a specified threshold, or between specified maximum and minimum frequencies.

If the signal has harmonics present, you can elect to track the fundamental instead of harmonic peaks, even if the harmonics are larger or the fundamental is missing completely. You can also elect to have the dotted cursor track a specified harmonic.

Track is especially useful with cursor Peak mode for precision tracking. Track and Peak are automatically activated for Spectrogram Pitch Track.

This Track dialog button appears in both the Spectrum and Spectrogram / Pitch Track dialogs. In the Spectrum dialog, the button indicates the Track toggle state.

Note that peak height, and hence Track operation, is affected by any active Spectrum Curve weighting. That is only active if Spectrum Y-log (dB) mode is also active, even if you are currently in Pitch Track mode where dB is always used.

Macro Notes:

When the Spectrum control dialog is open, SpectTrackDlg=1 opens the Spectrum Track dialog, SpectTrackDlg=0 closes it, and SpectTrackDlg=x toggles between open and closed.

Alternatively, when the Spectrogram / Pitch Track control dialog is open, SgTrackDlg=1 opens the Spectrum Track dialog, SgTrackDlg=0 closes it, and SgTrackDlg=x toggles between open and closed.

Note that you do not need to open the Spectrum Track dialog to change its controls directly via macro commands.

When Cursor Peak is also active, Posn?F returns the tracked frequency, Posn?N returns the corresponding MIDI note number for Pitch Track operation, Posn?V returns the peak magnitude (scaled such that 2^30 is 100% of the full-scale range), and Posn?v returns the corresponding MIDI velocity.

See also Spectrum Control Dialog, Spectrogram / Pitch Track Controls, Accelerator Key (Hot Key) Table


Questions? Comments? Contact us!

We respond to ALL inquiries, typically within 24 hrs.
Over 35 Years of Innovative Instrumentation
© Copyright 2007 - 2022 by Interstellar Research
All rights reserved