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Difference between revisions of "NVGate Filter Builder"
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→High-Low pass
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* '''Type''': The type of the filter - Low pass or High pass. | * '''Type''': The type of the filter - Low pass or High pass. | ||
* '''Design Type''': The analog prototype filter - Butterworth, Chebyshev band-pass ripple (Type I), or Chebyshev stop-band ripple (Type II). | * '''Design Type''': The analog prototype filter - Butterworth, Chebyshev band-pass ripple (Type I), or Chebyshev stop-band ripple (Type II). | ||
: The Butterworth filter has flat response in both the pass band and stop band, but its transition band is wide. | |||
: 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. | |||
: The Chebyshev type II (stop-band ripple) filter has flat response in the pass band, but it has ripples in the stop band. Its transition band is narrower than the Butterworth filter, but wider than the Chebyshev type I. | |||
: Below is an example showing these three filters with the same filter order. | |||
[[File:filters_3.png|600px]] | |||
* '''Filter order''': The filter order can be selected from 1 to 40 in Office mode, and from 1 to 10 in Connected mode. The higher the order is, the steeper the cut-off slope is. | * '''Filter order''': The filter order can be selected from 1 to 40 in Office mode, and from 1 to 10 in Connected mode. The higher the order is, the steeper the cut-off slope is. | ||
[[File:butterworth_freq_response.png|600px]] | |||
* '''Applied to''': Shows which plug-in the filter is applied to. The construction of the filter requires applying it to a signal with the same bandwidth. The determination of the associated plug-in/bandwidth is automatic. Deactivate the filter to reset. | * '''Applied to''': Shows which plug-in the filter is applied to. The construction of the filter requires applying it to a signal with the same bandwidth. The determination of the associated plug-in/bandwidth is automatic. Deactivate the filter to reset. | ||
: The other modules (front-end, monitor, resources) operate at the front end input sampling frequency (in connected mode on-line) or at the max player bandwidth (in post analysis mode). | : The other modules (front-end, monitor, resources) operate at the front end input sampling frequency (in connected mode on-line) or at the max player bandwidth (in post analysis mode). | ||