Difference between revisions of "NVGate Filter Builder"

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NVGate Filter Builder (view source)

Revision as of 12:48, 18 May 2020

3,429 bytes removed ,  12:48, 18 May 2020
→‎Time windows
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[[Image:Filter_builder_07.png|framed|none]]
[[Image:Filter_builder_07.png|framed|none]]
====Time windows====
<font color="#7F9698"></font>Used to define time weighting windows that can be applied to FFT blocks.
[[Image:Filter_builder_08.png|framed|none]]
=====Force=====
This setting is generally used to set up a uniform time window around the interesting part of the signal such as hammer impact, for example.
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* '''Window Start''': Starting point of the window as a percentage of the triggered block size of the plug-in using the window. The block size is the plug-in resolution setting value multiplied by 2.56. ex: for 401 lines resolution the triggered block size is 401*2.56 = 1024 samples.
* '''Window Stop''': Stopping point of the window in percentage of the triggered block size of the plug-in using the window. The block size is the plug-in resolution setting value multiplied by 2.56. ex: for 401 lines resolution the triggered block size is 401*2.56 = 1024 samples.
'''Note''': it is possible to adjust the start and stop values graphically by using drag and drop on the graph.
[[Image:Filter_builder_10.png|framed|none]]
=====Response=====
This setting is generally used to set up a uniform time window around the interesting part of the signal such as the response of an accelerometer after a hammer impact, for example.
[[Image:Filter_builder_11.png|framed|none]]
* '''Window Stop''': Stopping point of the window as a percentage of the triggered block size of the plug-in using the window. The block size is the plug-in resolution setting value multiplied by 2.56. ex: for 401 lines resolution the triggered block size is 401*2.56 = 1024 samples.
* '''Flat top Start''': Starting point of the window flat top as percentage of the triggered block size of the plug-in using the window. The block size is the plug-in resolution setting value multiplied by 2.56. ex: for 401 lines resolution the triggered block size is 401*2.56 = 1024 samples.
* '''Flat top Stop''': Stopping point of the window flat top as a percentage of the triggered block size of the plug-in using the window. The block size is the plug-in resolution setting value multiplied by 2.56. ex: for 401 lines resolution the triggered block size is 401*2.56 = 1024 samples.
* '''Decreasing point X''': Abscissa of the intermediate point that determines the decreasing coefficient of the exponential function as a percentage of the triggered block size of the plug-in using the window. The block size is the plug-in resolution setting value multiplied by 2.56. ex: for 401 lines resolution the triggered block size is 401*2.56 = 1024 samples.
* '''Decreasing ''''''point Y''': Ordinate of the intermediate point that determines the decreasing coefficient of the exponential function as a percentage of the value of the signal.
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* '''Exponential coefficient''': this coefficient is calculated with the coordinates of Decreasing point Y and Decreasing point X.
In this example, it then gives
[[Image:Filter_builder_14.png|framed|none]]
'''Note:''' a time window can be applied to several plug-in analyzer channels. The modification of the time window values will be applied to all the channels the time window is active.
[[Image:Filter_builder_15.png|framed|none]]
'''Note''': it is possible to adjust the values graphically by using drag and drop on the graph.
[[category:Filter builder]]
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