FRS/PMR446/GMRS Family Radio Processor
13
CMX838 Advance Information
4.1.3.1 Preemphasis/Low-pass Filter
Figure 6 shows magnitude response for the Input Preemphasis/Low-pass Filter when programmed for low-
pass mode. This mode would typically be selected when processing Rx audio.
5
0
-5
-10
-15
-20
-25
-30
-35
1000
10000
Frequency (Hz)
Figure 6: Magnitude response for input low-pass filter.
Figure 7 shows magnitude response for the Input Preemphasis/Low-pass Filter when programmed for
Preemphasis mode. This mode would typically be selected when processing Tx audio.
15
10
5
0
-5
-10
-15
-20
100
1000
Frequency (Hz)
Figure 7: Magnitude response for preemphasis filter.
10000
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