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!

Removable (USB) Sound Cards

Controls: Edit Menu >> Start Preferences >> Device

Changing device numbers is a particular problem with USB sound cards. In a typical situation you may have a single internal sound card, but occasionally want to use a USB sound card. The internal card is Device 0 when only it is present, but the USB card becomes Device 0 as soon as it is plugged in, and the internal card becomes Device 1. To handle all possibilities, you could have three different icons, as described under Managing Multiple Devices: The default icon with no parameters would be used when the USB card is not present. When the USB card is plugged in, you'd click another icon to tell Daqarta to use that device, with DaqartaU (for example) as the base filename. The Target command line under the Shortcut tab would be:

"C:\Program Files\Daqarta\Daqarta.exe" O:0 I:0 N:U

When the USB card is plugged in, but you want Daqarta to ignore it and use the original internal device, the Target command line would be:

"C:\Program Files\Daqarta\Daqarta.exe" O:1 I:1 N:0

Note that here N:0 tells Daqarta to use the same Daqarta0 files that are used in the default situation, while O:1 and I:1 indicate that the internal device has been renumbered by Windows.

You can change the icon appearance to have a transparent background instead of a black starfield. This can help to tell different Daqarta installations apart at a glance.


See also Managing Multiple Devices, Removable Drive with Multiple Systems, Sound Card Performance Tests

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