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!

Spectrum Averager Artifact Rejection Limits

Controls: Spect Avg Dialog >> Artifact Reject
Macros: SpavgArt, SpavgArtPos, SpavArtNeg

Any frame that has signal levels outside of the Artifact Reject Max and Min range will not be included in the spectrum average. This can allow an average to be accumulated in the presence of sporadic noise or interference.

Use the four Artifact Reject buttons to select the channels that will be monitored. An artifact on any selected channel will exclude that frame from averages on all channels.

A selected channel button has no effect if that channel is not active. To disable artifact rejection, simply toggle off all four buttons.

Note that Waveform Averager and Spectrum Averager limits and channel selections are maintained separately.

A general discussion of artifact rejection appears under Artifact Rejection Limits.


Macro Notes:

LI.SpavgArt=1 selects the Left In channel, LI.SpavgArt=0 de-selects, and LI.SpavgArt=x toggles.

Use RI.SpavgArt for Right In, LO.SpavgArt for Left Out, and RO.SpavgArt for Right Out. Alternatively, you can use Ch.SpavgArt to select or de-select a channel previously specified via the Ch Channel Select command.

SpavgArtPos=87.6 sets the upper limit to 87.6 percent of full scale. SpavgArtNeg=-98.7 sets the lower limit to -98.7 percent. Note signs: SpavgArtPos can accept negative values and SpavgArtNeg can accept positive values for special cases.


See also Averager and Spectrum Averager Controls.


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