Filters a signal using a bandstop windowed FIR filter. Bandstop filters attenuate a certain band of frequencies.
A value that affects the output coefficients when window type is Kaiser, Gaussian, or Dolph-Chebyshev.
If window type is any other type of window, this node ignores this input.
This input represents the following information for each type of window:
Default: NaN—Causes this node to set beta to 0 for a Kaiser window, the standard deviation to 0.2 for a Gaussian window, and s to 60 dB for a Dolph-Chebyshev window
Type of the smoothing window.
Smoothing windows decrease ripple in the filter passband and improve the ability of the filter to attenuate frequency components in the filter stopband.
Name | Value | Description |
---|---|---|
Rectangle | 0 | Applies a rectangle window. |
Hanning | 1 | Applies a Hanning window. |
Hamming | 2 | Applies a Hamming window. |
Blackman-Harris | 3 | Applies a Blackman-Harris window. |
Exact Blackman | 4 | Applies an Exact Blackman window. |
Blackman | 5 | Applies a Blackman window. |
Flat Top | 6 | Applies a Flat Top window. |
4 Term B-Harris | 7 | Applies a 4 Term B-Harris window. |
7 Term B-Harris | 8 | Applies a 7 Term B-Harris window. |
Low Sidelobe | 9 | Applies a Low Sidelobe window. |
Blackman Nutall | 11 | Applies a Blackman Nutall window. |
Cosine Tapered | 12 | Applies a Cosine Tapered window. |
Triangle | 30 | Applies a Triangle window. |
Bartlett-Hanning | 31 | Applies a Bartlett-Hanning window. |
Bohman | 32 | Applies a Bohman window. |
Parzen | 33 | Applies a Parzen window. |
Welch | 34 | Applies a Welch window. |
Kaiser | 60 | Applies a Kaiser window. |
Dolph-Chebyshev | 61 | Applies a Dolph-Chebyshev window. |
Gaussian | 62 | Applies a Gaussian window. |
Force | 64 | Applies a Force window. |
Exponential | 65 | Applies an Exponential window. |
Default: Rectangle
A Boolean that specifies the initialization of the internal state of the node.
True | Initializes the internal state to zero. |
False | Initializes the internal state to the final state from the previous call of this node. |
This node automatically initializes the internal state to zero on the first call and runs continuously until this input is True.
Default: False
Low cutoff frequency of the filter. low cutoff frequency must be less than high cutoff frequency.
Default: 0.125
High cutoff frequency of the filter. high cutoff frequency must be greater than low cutoff frequency and less than 0.5*fs, where fs is the sampling frequency.
Default: 0.45
Number of taps in the FIR filter.
Default: 25
Order of the filter.
Default: 2
Error conditions that occur before this node runs.
The node responds to this input according to standard error behavior.
Standard Error Behavior
Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.
Default: No error
Sampling frequency in Hz. sampling frequency must be greater than zero.
This input is available only if you wire one of the following data types to signal:
Default: 1, which is the normalized sampling frequency
Error information.
The node produces this output according to standard error behavior.
Standard Error Behavior
Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.
Where This Node Can Run:
Desktop OS: Windows
FPGA: Not supported
Web Server: Not supported in VIs that run in a web application