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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.
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Tone Frequency Dialog

Controls: Gen Dlg >> Stream >> Tone Freq
Macro: FreqDlg

The Tone Freq button and associated control appear when the Wave type is repetitive. They are replaced by Timing information (typically Smooth TC) when Wave is one of the Noise types.

If all you wish to do is change the frequency of a wave, you may use the Tone Freq control directly. If you click on the button, it brings up a dialog that allows control of not only the frequency, but also the phase and Gen Sync resolution. In addition, there are controls to select when the phase should be reset, such as at the start of each Burst or Sweep. You may also change the frequency entry mode to make it easier to enter frequencies that fall on certain values.

For convenience, the Phase, Frequency, and Frequency Entry Mode controls are also duplicated in the AM, FM, and Phase, Modulation dialogs. The Sweep dialog includes duplicates for Frequency (as the Start frequency) and Frequency Entry Mode, but not Phase.

Tone Frequency Dialog:

If the Wave type is set to Play, then the Tone Frequency header changes to Rate and the dialog then controls playback rate (either absolute or relative to the current sample rate).


Macro Notes:

FreqDlg=1 opens the Tone Frequency dialog if the Stream dialog is open and the Wave type is repetitive, FreqDlg=0 closes it, and FreqDlg=x toggles between open and closed.

This same command opens the Random / Step Timing Dialog if Wave is set to one of the Noise types, or to an Arb or Play wave if its Interpolate/Round/Step control is set to Step.

Note that you do not need to open this dialog to change any of its controls directly via macro command. You can even change those controls when the Wave is non-repetitive and this dialog can't be opened, though such changes will produce no effect until the Wave is changed to a repetitive type.


See also Random / Step Timing Dialog, Waveform Stream Controls.

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

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