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!

Sound Card Random / Step Timing Dialog

Controls: Gen Dlg >> Stream >> Smooth TC
Macro: FreqDlg

If Wave is set to one of the Noise types, then the Tone Frequency button changes to Smooth TC and the associated control is a mirror of that in the Timing dialog. You can change that value directly, or hit the button to bring up the complete Timing dialog.

The Timing dialog allows you to step through the random values slowly, smooth them, quantize them, make them track another Noise source, or create sources that are shifted in time. You can modulate the number of levels or the bias of the quantization, and you can modulate the relative time shift of tracking sources.

You can also select this mode for an Arb or Play wave if its Interpolate/Round/Step control is set to Step.

The upper "radio button" control in the Timing dialog selects one of 3 timing modes. In Slow or Step modes the control immediately below sets the Slow Factor or Step Size and is labeled accordingly. That control has no effect in Spec mode.

Quant, Bias, and Shift are essentially edit-type controls that have their labels on pushbuttons. For most applications you can just ignore the buttons, and use the edit portion of each control normally. Pressing the button opens a dialog to enable modulation of the parameter for special cases.


Timing Dialog:

Macro Notes:

FreqDlg=1 opens the Timing dialog if the Stream dialog is open and the Wave type is non-repetitive, FreqDlg=0 closes it, and FreqDlg=x toggles between open and closed.

This same command opens the Tone Frequency Dialog if the Wave type is repetitive.

Note that you do not need to open this dialog to change any of its controls directly via macro command. You can even change those controls when the Wave is repetitive and this dialog can't be opened, though such changes will produce no effect until the Wave is changed to a non-repetitive type.


See also Tone Frequency Dialog, Waveform Stream Controls.

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