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!

Voice Synthesizer Problems

If you use a voice synthesizer to read the screen, and you only have a single sound card in your system, it most likely uses the same Wave output that the Generator uses. This results in the two signals being mixed together, usually with very unsatisfactory results.

In addition, since there is only a single Wave Mute on the sound card, it mutes both processes. If the Generator Auto-Mute option has been checked in Run Preferences, the Wave output will be muted whenever the Generator is off... meaning the voice synthesizer will be muted as well.

Further, Windows typically reserves some of the sound card output range for each application, which can result is calibration problems.

The ideal situation is to have a separate sound card for each device, so they don't have to share. You can select which device Daqarta will use via the Sound Card Device Selects in the Start Preferences dialog. (Note that Start Preferences don't take effect until the next Daqarta session.) If your system doesn't have a second sound card, you might consider an inexpensive USB device for this purpose. See Sound Card Performance Tests for some examples.


See also Troubleshooting

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