After relay the signal is diplexed via a low pass filter.

However, it is necessary to distinguish between low pass and high pass filter.

The only adjustable parameter provided for the samples was a simple low pass filter.

The dark black and red lines in the foreground have been smoothed using a low pass filter.

This error can be reduced by using a low pass filter.

There are two analog low pass filters, one for each stereo channel.

Each low pass filter can be changed between 4-pole or 2-pole.

There is also a non-resonant, digital, 4-pole high pass filter available for further processing.

The bottom figure shows the same waveform after passing through a high pass filter to facilitate measuring.

If both and are positive, the output will resemble a low pass filter, with the high frequency part of the noise decreased.