Robotron Pty Ltd G5E 用户手册

 

The Audio filter makes it possible to apply filtering to the demodulated audio.  

This is useful in particular for noisy signals, where intelligibility is improved by 
emphasizing particular frequencies (usually speech frequencies 300-3000 Hz).  

In the FM mode the audio filter is usually necessary to provide de-emphasis of 
high frequencies.  

The Audio filter is activated using a button at bottom right of the demodulator 
panel: 

 

There two types of filters: band-pass and low-pass, and their parameters can 
be adjusted under the Setup button: 

 

 

The Audio filter settings make it possible to adjust audio filtering parameters 
separately for each demodulation mode. The On button either enables or 
disables filtering, and is tied to the Audio filter button in the demodulator front 
panel.  

 

 

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