Package org.apache.sysds.runtime.matrix.data

Class LibMatrixSTFT

java.lang.Object

org.apache.sysds.runtime.matrix.data.LibMatrixSTFT

public class LibMatrixSTFT
extends Object

Liberary file containing methods to perform short time fourier transformations.

Constructor Summary

Constructors

Constructor	Description
LibMatrixSTFT()

Method Summary

Modifier and Type	Method	Description
static MatrixBlock[]	stft(MatrixBlock re, int windowSize, int overlap, int threads)	Function to perform STFT on a given matrices with windowSize and overlap.
static MatrixBlock[]	stft(MatrixBlock re, MatrixBlock im, int windowSize, int overlap, int threads)	Function to perform STFT on two given matrices with windowSize and overlap.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LibMatrixSTFT

public LibMatrixSTFT()

Method Detail

stft

public static MatrixBlock[] stft(MatrixBlock re,
                                 MatrixBlock im,
                                 int windowSize,
                                 int overlap,
                                 int threads)

Function to perform STFT on two given matrices with windowSize and overlap. The first one represents the real values and the second one the imaginary values. The output also contains one matrix for the real and one for the imaginary values. The results of the fourier transformations are appended to each other in the output.

Parameters:

re - Matrix object representing the real values

im - Matrix object representing the imaginary values

windowSize - Size of window

overlap - Size of overlap

threads - The number of threads to use

Returns:

array of two matrix blocks

stft

public static MatrixBlock[] stft(MatrixBlock re,
                                 int windowSize,
                                 int overlap,
                                 int threads)

Function to perform STFT on a given matrices with windowSize and overlap. The matrix represents the real values. The output contains one matrix for the real and one for the imaginary values. The results of the fourier transformations are appended to each other in the output.

Parameters:

re - matrix object representing the real values

windowSize - size of window

overlap - size of overlap

threads - The number of threads to use

Returns:

array of two matrix blocks