Data AcQuisition And Real-Time AnalysisScope - Spectrum - Spectrogram - Signal Generator
Software for Windows
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Prompt Volume Change
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.
PrefVolChg=1 activates this option, PrefVolChg=0 cancels it.
Note that volume changes made directly via macros never cause exit prompts. However, a macro may request the user to make a manual change, for example, and then wait for a confirmation action such as hitting the Spacebar key. That would cause an exit prompt if this option is active.
The macro can prevent the exit prompt via PrefVolChg#X=0 after the confirmation action. Conversely, it can force an exit prompt (if this option is active) via PrefVolChg#X=1 (or any other non-zero value).
See also Run Preferences Dialog
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