FftSharp 2.1

• FFT: Added InverseReal() methods (#74, #71) Thanks @gsgou and @FrankHileman
• Window: Added HammingPeriodic and HanningPeriodic windows (#76, #75) Thanks @gsgou
• IWindow: Added IsSymmetric property (#76)
• FFT: Fixed ForwardReal() overload that accepts System.Numerics.Complex[] (#78, #73) Thanks @FrankHileman
• FFT: Added FftShift() method (#69, #68) Thanks @MV10
• Experimental: Added Bluestein() for calculating FFT of data whose length is not a power of 2 (#77) Thanks @gsgou

FftSharp 2.0

This new major version does not make breaking changes, but does mark many common methods Obsolete with messages that indicate the classes to use instead.

Major changes

• Methods accept System.Numerics.Complex[] instead of FftSharp.Complex[] (#61)
• FftSharp.FFT.Forward() is used instead of FftSharp.Transform.FFT()
• FftSharp.FFT.Magnitude() is used instead of FftSharp.Transform.FFTmagnitude()
• FftSharp.FFT.Power() is used instead of FftSharp.Transform.FFTpower()
• FftSharp.FFT.FrequencyScale() is used instead of FftSharp.Transform.FFTfreq()

Minor Changes

• Added FftSharp.FFT.Phase() (#58)
• Improved support for FFT analysis of small arrays (#62)

FftSharp 1.1.6

Published on NuGet on 2022-06-16

• Improved accuracy of Transform.FFTfreq() for one-sided FFTs (#49, #50) Thanks @arthurits

FftSharp 1.1.5

Published on NuGet on 2022-03-23

• Adjusted all window functions to ensure they matched Python/Scipy, slightly improving symmetry for windows with even sizes (#46, #47) Thanks @frouwen

FftSharp 1.1.4

Published on NuGet on 2021-11-16

• Made all Window classes public (#44) Thanks @unitay

FftSharp 1.1.3

Published on NuGet on 2021-10-27

• Added Tukey and Welch windows (#41)
• Added window inspector demo (#38, #39)
• Improved NuGet package readme (#43)

FftSharp 1.1.2

Published on NuGet on 2021-10-26

• FFT methods support Span<T> (#36) Thanks @ladeak
• Windows are now classes in the FftSharp.Windows namespace that implement IWindow
• Debug symbols are now packaged using snupkg format, are deterministic, and use SourceLink

FftSharp 1.0.12

Published on NuGet on 2021-10-06

• Added a Kaiser window (#35) Thanks @ADD-eNavarro
• NuGet Package is now deterministic and uses SourceLink

FftSharp 1.0.8

Published on NuGet on 2020-11-01

• New FftSharp.Filter module provides LowPass(), HighPass(), BandPass(), and BandStop() methods (#23)

FftSharp 1.0.7

Published on NuGet on 2020-08-21

• Transform.FftMagnitude() and Transform.FftPower() now return an array of length N/2 + 1 instead of N/2 (#24) Thanks @paradigmn
• Created FftSharp.Transform.RFFT() to return just the real component of a mirrored Complex array
• Created FftSharp.Transform.Absolute() to convert Complex[] to double[]