Contributions:FIRFilter: Difference between revisions
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===Source Code Revisions=== | ===Source Code Revisions=== | ||
*Initial development: 31 | *Initial development: 31 | ||
*Tested under: | *Tested under: 2203 | ||
*Known to compile under: | *Known to compile under: 2203 | ||
*Broken since: -- | *Broken since: -- | ||
==Parameters== | ==Parameters== | ||
=== | ===FIRIntegration=== | ||
This parameter may be one of | |||
;0 - none | |||
:no integration, | |||
;1 - mean | |||
:mean value, | |||
;2 - rms | |||
:root mean square, | |||
;3 - max | |||
:maximum value. | |||
For each sample of input, the FIRFilter computes the convolution of past samples with FIR filter coefficients. | |||
FIR filter coefficients. | When ''FIRIntegration'' is set to "none", this is also the filter's output. | ||
When ''FIRIntegration'' is set to "mean", "rms", or "max", the respective computation is performed on the convolved signal, and its result returned in the output signal's first sample (element, bin). | |||
=== | ===FIRCoefficients=== | ||
A matrix of FIR filter coefficients. Here, rows correspond to channels, defining an individual FIR filter for each channel. When an empty matrix is specified, the FIRFilter returns its input signal unchanged. | |||
==States== | ==States== | ||
Latest revision as of 16:50, 22 November 2008
Synopsis
A finite impulse response (FIR) filter for temporal filtering.
Location
http://www.bci2000.org/svn/trunk/src/contrib/SignalProcessing/FIR
Versioning
Authors
Dennis McFarland, Juergen Mellinger
Source Code Revisions
- Initial development: 31
- Tested under: 2203
- Known to compile under: 2203
- Broken since: --
Parameters
FIRIntegration
This parameter may be one of
- 0 - none
- no integration,
- 1 - mean
- mean value,
- 2 - rms
- root mean square,
- 3 - max
- maximum value.
For each sample of input, the FIRFilter computes the convolution of past samples with FIR filter coefficients. When FIRIntegration is set to "none", this is also the filter's output. When FIRIntegration is set to "mean", "rms", or "max", the respective computation is performed on the convolved signal, and its result returned in the output signal's first sample (element, bin).
FIRCoefficients
A matrix of FIR filter coefficients. Here, rows correspond to channels, defining an individual FIR filter for each channel. When an empty matrix is specified, the FIRFilter returns its input signal unchanged.
States
None.