Generic Filterbank: Difference between revisions
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A filter bank with generic taps. | |||
This block takes in a vector of N complex inputs, passes them through N FIR filters, and outputs a vector of N complex outputs. | |||
The only advantage of using this block over N individual FIR filter blocks is that it places less of a load on the scheduler. | |||
The number of filters cannot be changed dynamically, however filters can be deactivated (i.e. no processing is done for them) by passing a vector of filter taps containing all zeros to them. In this case their entry in the output vector is a zero. | |||
== Parameters == | == Parameters == | ||
(''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> | ||
; | ; Taps(list of lists) (''R'') | ||
: | : (vector of vector of floats / list of list of floats) Populates the filters. | ||
== Example Flowgraph == | == Example Flowgraph == | ||
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; C++ files | ; C++ files | ||
: [https://github.com/gnuradio/gnuradio | : [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/lib/filterbank_vcvcf_impl.cc Work function] | ||
: [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/lib/filterbank.cc Helper functions] | |||
; Header files | ; Header files | ||
: [https://github.com/gnuradio/gnuradio | : [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/lib/filterbank_vcvcf_impl.cc Work function] | ||
; Public header files | ; Public header files | ||
: [https://github.com/gnuradio/gnuradio | : [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/include/gnuradio/filter/filterbank_vcvcf.h Work function] | ||
: [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/include/gnuradio/filter/filterbank.h Helper functions] | |||
; Block definition | ; Block definition | ||
: [https://github.com/gnuradio/gnuradio | : [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/grc/filter_filterbank_vcvcf.block.yml] | ||
Latest revision as of 14:59, 11 September 2019
A filter bank with generic taps.
This block takes in a vector of N complex inputs, passes them through N FIR filters, and outputs a vector of N complex outputs.
The only advantage of using this block over N individual FIR filter blocks is that it places less of a load on the scheduler.
The number of filters cannot be changed dynamically, however filters can be deactivated (i.e. no processing is done for them) by passing a vector of filter taps containing all zeros to them. In this case their entry in the output vector is a zero.
Parameters
(R): Run-time adjustable
- Taps(list of lists) (R)
- (vector of vector of floats / list of list of floats) Populates the filters.
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
- Work function
- Helper functions
- Header files
- Work function
- Public header files
- Work function
- Helper functions
- Block definition
- [1]