org.tensorflow.op.core

Class RFFT

java.lang.Object

org.tensorflow.op.PrimitiveOp

org.tensorflow.op.core.RFFT

All Implemented Interfaces:

Op, Operand<Object>

@Operator
public final class RFFT
extends PrimitiveOp
implements Operand<Object>

Real-valued fast Fourier transform.

Computes the 1-dimensional discrete Fourier transform of a real-valued signal over the inner-most dimension of `input`.

Since the DFT of a real signal is Hermitian-symmetric, `RFFT` only returns the `fft_length / 2 + 1` unique components of the FFT: the zero-frequency term, followed by the `fft_length / 2` positive-frequency terms.

Along the axis `RFFT` is computed on, if `fft_length` is smaller than the corresponding dimension of `input`, the dimension is cropped. If it is larger, the dimension is padded with zeros.

Field Summary

Fields inherited from class org.tensorflow.op.PrimitiveOp

operation

Method Summary

Modifier and Type	Method and Description
Output<Object>	asOutput() Returns the symbolic handle of a tensor.
static RFFT	create(Scope scope, Operand<Float> input, Operand<Integer> fftLength) Factory method to create a class to wrap a new RFFT operation to the graph.
Output<?>	output() A complex64 tensor of the same rank as `input`.

Methods inherited from class org.tensorflow.op.PrimitiveOp

equals, hashCode, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

create

public static RFFT create(Scope scope,
                          Operand<Float> input,
                          Operand<Integer> fftLength)

Factory method to create a class to wrap a new RFFT operation to the graph.

Parameters:

scope - current graph scope

input - A float32 tensor.

fftLength - An int32 tensor of shape [1]. The FFT length.

Returns:

a new instance of RFFT

output

public Output<?> output()

A complex64 tensor of the same rank as `input`. The inner-most dimension of `input` is replaced with the `fft_length / 2 + 1` unique frequency components of its 1D Fourier transform.

asOutput

public Output<Object> asOutput()

Description copied from interface: Operand

Returns the symbolic handle of a tensor.

Inputs to TensorFlow operations are outputs of another TensorFlow operation. This method is used to obtain a symbolic handle that represents the computation of the input.

Specified by:

asOutput in interface Operand<Object>

See Also:

OperationBuilder.addInput(Output)