34
SunSDR2 DX User Manual
© 2020 Expert Electronics
ExpertSDR2 SOFTWARE DESCRIPTION
Release - this is the period, required for the signal level to be restored to the default value.
Type - there are 3 types of pre-proc algorithm, where the 1st is the most aggressive and the 3rd
is the least aggressive.
Input Boost – preamplifying of the input signal before limiter processing.
Parametric filter module with graphic display of the summed AFC (amplitude-frequency
characteristic – white line) and AFC of each filter. Simultaneously you can use up to 5 filters.
Available filter types:
Lowpass – Low Pass Filter (LPF). This filter passes signals with a frequency lower than a
certain cutoff frequency. Cutoff frequency is determined by Frequency. Quality determines
steepness of the filter slope.
Highpass – High Pass Filter (HPF). This filter passes signals with a frequency higher than a
certain cutoff frequency. Cutoff frequency is determined by Frequency. Quality determines
steepness of the filter slope.
Bandpass – this filter passes frequencies within a certain range (band) and rejects frequencies
outside that range. Cutoff frequency is determined by Frequency. Quality determines
bandwidth of the passband.
Notch – it is a band-stop filter with a narrow stopband. It rejects a specific range of frequencies
and passes all the other frequencies unaltered. Tuning frequency is determined by Frequency.
Quality determines the stopband bandwidth.
Peak – also known as bell filter. This filter has similar functionality with the Notch filter, but has
more flexible settings. It boosts or cuts the chosen frequency by Gain value, affecting the
surrounding frequencies in a bell-shaped curve. Tuning frequency is determined by Frequency.
Quality determines the cutoff bandwidth.
Low Shelf – this filter cuts or boosts signals of frequencies below the cutoff frequency,
determined by Frequency. Gain value determines attenuation or boost level of frequencies
below the cutoff frequency. Frequencies above filter’s AFC will not be altered.
High Shelf - this filter cuts or boosts signals of frequencies above the cutoff frequency,
determined by Frequency. Gain value determines attenuation or boost level of frequencies
above the cutoff frequency. Frequencies below filter’s AFC will not be altered.
To Next Page
Loading...
