AM Modulation Frequency

Macro: AMmodFreq

This sets the AM modulator frequency when Source is set to Sine. The main Frequency Entry Mode affects this control as well.

One unusual use of AM is to produce controllable 2nd-harmonic distortion for testing purposes. If you set the AM Sine modulator frequency to match the main (carrier) Frequency, you can adjust the amount of the 2nd harmonic using the AM Depth control. There will also be a DC term (the difference term, where both frequencies are equal) which you can control by adjusting the relative phases.

Macro Notes:

L.1.AMmodFreq=100.5 sets the Left Stream 1 AM Modulation Frequency to 100.5 Hz.

AMmodFreq=>1 will increment or AMmodFreq=>-1 will decrement the current AM Modulator Frequency by 1 Frequency Step. Only +/-1 step is allowed per command, but the step size and type can be controlled via the Frequency Step dialog. Note: The Frequency Step setting affects the behavior of almost all Generator frequency controls.

See also Amplitude Modulation, Amplitude Modulation Dialog, Waveform Stream Controls.