org.tensorflow.op.core

Class IRFFT

java.lang.Object

org.tensorflow.op.PrimitiveOp

org.tensorflow.op.core.IRFFT

All Implemented Interfaces:

Op, Operand<Float>

@Operator
public final class IRFFT
extends PrimitiveOp
implements Operand<Float>

Inverse real-valued fast Fourier transform.

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

The inner-most dimension of `input` is assumed to be the result of `RFFT`: the `fft_length / 2 + 1` unique components of the DFT of a real-valued signal. If `fft_length` is not provided, it is computed from the size of the inner-most dimension of `input` (`fft_length = 2 * (inner - 1)`). If the FFT length used to compute `input` is odd, it should be provided since it cannot be inferred properly.

Along the axis `IRFFT` is computed on, if `fft_length / 2 + 1` 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<Float>	asOutput() Returns the symbolic handle of a tensor.
static IRFFT	create(Scope scope, Operand<?> input, Operand<Integer> fftLength) Factory method to create a class to wrap a new IRFFT operation to the graph.
Output<Float>	output() A float32 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 IRFFT create(Scope scope,
                           Operand<?> input,
                           Operand<Integer> fftLength)

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

Parameters:

scope - current graph scope

input - A complex64 tensor.

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

Returns:

a new instance of IRFFT

output

public Output<Float> output()

A float32 tensor of the same rank as `input`. The inner-most dimension of `input` is replaced with the `fft_length` samples of its inverse 1D Fourier transform.

asOutput

public Output<Float> 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<Float>

See Also:

OperationBuilder.addInput(Output)