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!

Synthesizer Control Dialog

Controls: Edit Menu >> Synth Controls
Macro: SynthDlg

You can open the Synth dialog from the Edit menu via ALT+E, N or directly via CTRL+N. This dialog will not appear if no MIDI synthesizer is found in your system; an explanatory message will be shown instead.

If Pitch-to-MIDI is active, that dialog will appear instead of Synth. Synth is intended for simple technical applications, while Pitch-to-MIDI is for musical performances.

The Synth dialog uses the sound card's built-in synthesizer to provide limited signal generator capabilities. It is no substitute for the Daqarta Generator, but because it has its own independent output channel, it may be useful on some older sound cards that don't allow Wave Output during Input (full-duplex operation). Note however, that some cards automatically disconnect the Synth output when Input is active.

The card synth is independent of the Daqarta Generator. Both, however, share the same Master Out control, so you may want to select Use Vol Steps from the Generator Attenuator Options dialog (if it is not selected already) so that the Generator Wave Out control will be independent of Master Out. That way you can use both Synth and Generator simultaneously.

Use Vol Steps is especially important if you are using the Audible Error Alert option to provide status and error notification that is independent of the Generator output.

Note that unlike the Generator, the Synth signal is not automatically displayed. To see it, you must have Input active, and you must select Synth from the Line Select section of the Input Control Dialog. If you don't see a line called Synth or MIDI, try "Stereo Mix" or "What You Hear". If there is no equivalent option, you may have to externally route Line Out to Line In and select that.

Note that on some systems Stereo Mix may work only with internal speakers, not with headphones or anything else plugged into the sound card output jack.

Note that in Windows Vista and later systems, you can usually just toggle Input on; whatever sound was going to the output will automatically be routed to the input by default.

If you can display the Synth output, you can record it using DDisk. This allows you to capture Synth MIDI instrument notes for later use as Generator Arb or Play files.

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