IIR_Butterworth_CS_Library 1.0.5

.NET Standard 2.0
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dotnet add package IIR_Butterworth_CS_Library --version 1.0.5
NuGet\Install-Package IIR_Butterworth_CS_Library -Version 1.0.5
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="IIR_Butterworth_CS_Library" Version="1.0.5" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add IIR_Butterworth_CS_Library --version 1.0.5
#r "nuget: IIR_Butterworth_CS_Library, 1.0.5"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
// Install IIR_Butterworth_CS_Library as a Cake Addin
#addin nuget:?package=IIR_Butterworth_CS_Library&version=1.0.5

// Install IIR_Butterworth_CS_Library as a Cake Tool
#tool nuget:?package=IIR_Butterworth_CS_Library&version=1.0.5

C# Library to calculate the coefficients of the Butterworth filter and to filter the data

This code calculates the coefficients of the Band-pass, Band-stop, Low-pass and High-pass Butterworth filters. It also filters the data, but no zero-phase delay is applied.

Each filter function will return a 2 rows x N coefficients 2D vector, where Row 1 = Numerator and Row 2 = Denumerator. The method "Check_stability_iir" can be used to check the stability of the filter. Please, keep in mind that if the filter is unstable, numerical instability leading to numerical overflow might happen when when the order selected is extremely high. If that situation occurs, the program might assign a default value of 10^10 at the denominator.

Band-pass: the function is "double[][] Lp2bp(double W_f1, double W_f2, int order_filt)". The first two arguments are the normalized two cut-off frequencies (f1/SF, f2/SF), which means that the cutoff frequencies must be within the interval of (0,1) and the last argument is the order;

Band-stop: the function is "double[][] Lp2bs(double W_f1, double W_f2, int order_filt)". The first two arguments are the normalized two cut-off frequencies (f1/SF, f2/SF), which means that the cutoff frequencies must be within the interval of (0,1) and the last argument is the order;

Low-pass: the function is "double[][] Lp2hp(double W_f1, int order_filt)". The first argument is the normalized two cut-off frequencies (f/SF), which means that the cutoff frequency must be within the interval of (0,1). The last argument is the order;

High-pass: the function is "double[][] Lp2lp(double W_f1, int order_filt)". The first argument is the normalized two cut-off frequencies (f/SF), which means that the cutoff frequency must be within the interval of (0,1). The last argument is the order;

Check the stability of the filter: the method is "bool Check_stability_iir(double[][] coeff_filt)". The argument is the 2D array containing the filter coefficients. It returns "true" if the filter is stable, "false" if it is unstable.

Filter the data: the method is "double[] Filter_Data(double[][] coeff_filt, double[] pre_filt_signal)". The two arguments are the filter coefficients and the signal to be filtered. It returns the filtered signal.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
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Version Downloads Last updated
1.1.2 3,015 8/8/2022
1.1.1 388 8/8/2022