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!

Sudden Calibration Shift

If the calibration of the sound card attenuators or Full-Scale Range, especially outputs, suddenly seems to be way off, the likely cause is that Windows has secretly "borrowed" some of the output range of the card for use by another application. Close all other sound applications and check again.

Alternatively, some such application may have been open during the calibration process, but is no longer open. Repeat the calibration, making sure that all other sound applications are fully closed first.

On Vista or Windows 7, 8, or 10 systems (even if you are running in XP compatibility mode), right-click the speaker icon in the system tray and open the Volume Mixer. Make sure that the Speakers slider is all the way up, and that any other sliders besides Daqarta's own are muted by clicking on the little speaker icon below each slider. In general it is always best to fully close all other applications that use the sound card before starting Daqarta. The Volume Mixer would then show only Speakers, Windows Sounds, and Daqarta sliders.


See also Troubleshooting

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