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Difference between revisions of "NVGate 2021: Release note"
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NVGate 2021: Release note (view source)
Revision as of 10:53, 26 November 2020
, 10:53, 26 November 2020no edit summary
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==New analog prototype filters== | ==New analog prototype filters== | ||
In addition to the Butterworth filter, now you can build the IIR filters with the Chebyshev type I (band-pass ripple) filter or Chebyshev type II (stop-band ripple) filter. | In addition to the Butterworth filter, now you can build the IIR filters with the Chebyshev type I (band-pass ripple) filter or Chebyshev type II (stop-band ripple) filter. | ||
The Butterworth filter has flat response in both the pass band and stop band, but its transition band is wide. | |||
The Chebyshev type II (stop-band ripple) filter has flat response in the pass band, and its transition band is narrower than the Butterworth filter. However, it has ripples in the stop band. | |||
The Chebyshev type I (band-pass ripple filter) has the steepest roll-off among the three filters, and its response in the stop band is flat. However, it has ripples in the pass band. | |||
==Increased filter order== | ==Increased filter order== | ||
The order of the filter affects the steepness of its | The order of the filter affects the steepness of its roll-off. The higher the order, the sharper the transition between the pass band and the stop band. An example demonstrating the impact of the filter order is shown below. | ||
For the high pass and low pass filters, the filter order can be selected from 1 to 40 in Office mode, and from 1 to 10 in Connected mode now. In the previous version, the maximum filter order is 6. | For the high pass and low pass filters, the filter order can be selected from 1 to 40 in Office mode, and from 1 to 10 in Connected mode now. In the previous version, the maximum filter order is 6. | ||