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

Signal Generator
(Absolutely FREE!)

Spectrogram

True RMS Voltmeter

Sound Level Meter

Frequency Counter

Period Counter

Event Counter

Spectral Event Counter

Waveform Averager

Histogram

Post-Stimulus Time
Histogram (PSTH)

Macro System

Multi-Trace Arrays

Trigger Controls

Auto-Calibration

Spectral Peak Track

Direct-to-Disk Recording

Accessibility

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

Contact us about
your application!

Prompt Volume Change

Controls: Edit Menu >> Run Preferences >> Volume Change
Macro: PrefVolChg

Output Volume or dB settings are saved as part of a Daqarta Generator setup. This box is checked by default to indicate that Daqarta will prompt you to save any volume changes with the setup before loading a new setup or exiting Daqarta. Uncheck this to avoid the prompt.

You may want to uncheck this box for casual listening experiments with Daqarta, where you don't care if you start with the same volume next time.

Another typical reason to uncheck it is for experiments that use a standard protocol that requires the same initial volume on every session. For example, you may be measuring hearing thresholds on different subjects in separate sessions, where each subject must get the same initial sound, after which the volume will be adjusted up or down until the detection threshold is determined. If no other changes are made to the setup, there is no point in saving these volume changes since the next subject must begin with the standard initial volume.

If your sound card uses a custom mixer that denies access to Daqarta, this parameter is ignored.


Macro Notes:

Changes made via macros never cause exit prompts.


See also Run Preferences Dialog

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