Difference between revisions of "Decimating FIR Filter"

From GNU Radio
Jump to: navigation, search
Line 7: Line 7:
 
(''R''): <span class="plainlinks">[https://wiki.gnuradio.org/index.php/GNURadioCompanion#Variable_Controls ''Run-time adjustable'']</span>
 
(''R''): <span class="plainlinks">[https://wiki.gnuradio.org/index.php/GNURadioCompanion#Variable_Controls ''Run-time adjustable'']</span>
  
; Param 1 (''R'')
+
; Decimation
: Description of parameter, provide any tips or recommended valuesNote that the name of the parameter above should match the param's label that shows up in grc (e.g. Sample Rate).
+
: Decimation rate.  The output stream will have this decimation applied to it.  A decimation rate of 1 simply means no decimationIf decimation is set higher than 1, make sure the filter will remove energy outside of the "output region", i.e. -Fs/2 to Fs/2 where Fs is the input sample rate divided by the decimation rate.
  
; Param 2
+
; Taps (''R'')
: blah blah blah
+
: Taps to use in FIR filter.
 +
 
 +
; Sample Delay
 +
: Additional samples to delay by, default is 0 or no delay.
  
 
== Example Flowgraph ==
 
== Example Flowgraph ==

Revision as of 04:21, 20 July 2019

This is GNU Radio's "normal" FIR Filter.

For a large number of taps, consider using an FFT Filter, see [1]

Parameters

(R): Run-time adjustable

Decimation
Decimation rate. The output stream will have this decimation applied to it. A decimation rate of 1 simply means no decimation. If decimation is set higher than 1, make sure the filter will remove energy outside of the "output region", i.e. -Fs/2 to Fs/2 where Fs is the input sample rate divided by the decimation rate.
Taps (R)
Taps to use in FIR filter.
Sample Delay
Additional samples to delay by, default is 0 or no delay.

Example Flowgraph

Insert description of flowgraph here, then show a screenshot of the flowgraph and the output if there is an interesting GUI. Currently we have no standard method of uploading the actual flowgraph to the wiki or git repo, unfortunately. The plan is to have an example flowgraph showing how the block might be used, for every block, and the flowgraphs will live in the git repo.

Source Files

C++ files
TODO
Header files
TODO
Public header files
TODO
Block definition
GRC File