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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.
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Waveform Averager Artifact Rejection Limits

Controls: Wave Avg Dialog >> Artifact Reject
Macros: WavgArtLI, RI, LO, RO; WavgArtPos, Neg

Any frame that has signal levels outside of the Artifact Reject Max and Min range will not be included in the waveform 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:

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

Use WavgArtRI for Right In, WavgArtLO for Left Out, and WavgArtRO for Right Out.

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


See also Averager and Waveform Averager Controls.

Applications:

Frequency response

Distortion measurement

Speech and music

Microphone calibration

Loudspeaker test

Musical instrument tuning

Animal sound

Evoked potentials

Rotating machinery

Vehicle pass-by noise

Product test

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