Signal Analysis

Click graph for examples.

Basic trends in sound intensity can be created by using the alphanumeric display on the VPE-2000, however if more detailed recording and comparison is what you’re after, models VPE-2000 and VPX-WR can be connected to spectrum analysis products for further review.

Spectrum Analysis Software works on your PC or laptop!

We’re not in the business of writing and selling software, however we can put you in touch with companies who offer PC based - dual channel, real time, FFT spectrum analysis software which works quite effectively with AccuTrak detectors. Simply connect AccuTrak’s output to your sound card, and view... Time series, Spectrum, Phase, Spectrogram, and 3D Surface. All for well under $1000!

Using your existing analyzer.

AccuTrak converts high frequency ultrasound (kilohertz) to the audible (hertz) range where it can be viewed by most analyzers. The output is AC, and is referenced to the case, which is the shield-ground of the co-axial cable. The range of the signal is 0-750mV. The output frequency is 0-3000kHz while (on the VPX-WR) the actual ultrasonic frequency is 38kHz plus the observed translated frequency. This means that if you see a 1600Hz signal it comes from a 38 + 1.6 = 39.6kHz source.

If your equipment is capable of processing high frequencies, AccuTrak can be ordered to provide the “Raw” (untranslated) signal rather than the translated signal. This offers advantages because the original signal has wider bandwidth and no filtering of low frequencies. This technique can provide simultaneous viewing of a wider range of events in realtime.

Hear Actual Recordings

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