 | FloatForward1DFFT Class |
FloatForward1DFFT represents the forward discrete fourier transform of a 1D real signal vector.
Inheritance HierarchyNamespace: CenterSpace.NMath.Core
Assembly: NMath (in NMath.dll) Version: 7.4
SyntaxThe FloatForward1DFFT type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | FloatForward1DFFT(Int32) |
Constructs a forward 1D FFT instance for float real signal vectors.
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| FloatForward1DFFT(FFTBase) |
Constructs a forward 1D FFT instance by copying the configuration from another FFT instance.
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Properties| Name | Description | |
|---|---|---|
 | Dimension |
Gets the FFT dimension.
(Inherited from FFTBase.) |
| Direction |
Gets the direction of the FFT, either forward or backward.
(Inherited from FFTBase.) |
| Domain |
Gets the forward domain of signal data; either complex or real.
(Inherited from FFTBase.) |
| ForwardScaleFactor |
Gets or sets the forward scale factor of the FFT; The default is 1.0 |
| Length |
Gets the length of the signal data.
(Inherited from FFTBase.) |
| Precision |
Gets the FFT precision; either float or double
(Inherited from FFTBase.) |
Methods| Name | Description | |
|---|---|---|
| Clone |
Creates a deep copy of this FFT instance.
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| CreateInverseFFT |
Creates a backward FFT instance of this forward float real 1D FFT.
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| FFT(Single) |
Computes foward FFT of vin.
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| FFT(FloatVector) |
Computes the foward FFT of vin.
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| FFT(Single, Single) |
Computes foward FFT of vin and places the result in vout |
| FFT(FloatVector, FloatVector) |
Computes the foward FFT of vin and places the result in vout |
| FFT(Single, Int32, Single) |
Computes the forward FFT of vin and places the result in vout, where vin and
vout contain offset signal data, vinoffset, voutoffset, respectively, from the [0] element.
|
| FFTInPlace(Single) | Obsolete.
Computes the forward 1D FFT of each row in arrayinout and returns the complex conjugate symmetric results in-place
in a packed format.
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| FFTInPlace(Single) |
Computes the in-place forward FFT of the signal vinout.
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| FFTInPlace(FloatVector) |
Computes the in-place forward FFT of the signal vinout.
|
| FFTInPlace(Single, Int32) |
Computes the in-place forward FFT of the signal vinout.
|
| FFTInPlaceArray |
Computes the forward 1D FFT of each row in arrayinout and returns the complex conjugate symmetric results in-place.
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| GetSignalReader(Single) | Obsolete.
Generates the appropriate reader to unpack the packed complex conjugate symmetric FFT's
computed by this class.
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| GetSignalReader(Single) |
Generates the appropriate reader to unpack the packed complex conjugate symmetric FFT's
computed by this class.
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| GetSignalReader(FloatVector) |
Generates the appropriate reader to unpack the packed complex conjugate symmetric FFT's
computed by this class.
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| GetSignalReaderForArray |
Generates the appropriate reader to unpack the packed complex conjugate symmetric FFT's
computed by this class.
|
| ToString |
Returns a String containing a summary of this FFT type.
(Inherited from FFTBase.) |
Fields| Name | Description | |
|---|---|---|
 | ipconfig_ |
In-place FFT configuration.
(Inherited from FFTBase.) |
| ofpconfig_ |
Out-of-place FFT configuration.
(Inherited from FFTBase.) |
Remarks The forward FFT is defined to have a negative exponent in the transform with a default
scale factor of 1.0.
To gain greater efficiency in transforming sets of same-length signals, first arrange signals row-by-row in an
array, and then use the method.
FFTInPlace(float[,] arrayinout)Examples
This example computes a signal of length 555 and places the complex complex result in the vector.
unpackedsignal
FloatForward1DFFT fft = new FloatForward1DFFT( 555 ); fft.FFTInPlace( x ); FloatSymmetricSignalReader reader = fft.GetSignalReader( x ); FloatComplex[] unpackedsignal = reader.UnpackFullToArray();
See Also