org.tensorflow.op.audio

Class DecodeWav

java.lang.Object

org.tensorflow.op.PrimitiveOp

org.tensorflow.op.audio.DecodeWav

All Implemented Interfaces:

Op

@Operator(group="audio")
public final class DecodeWav
extends PrimitiveOp

Decode a 16-bit PCM WAV file to a float tensor.

The -32768 to 32767 signed 16-bit values will be scaled to -1.0 to 1.0 in float.

When desired_channels is set, if the input contains fewer channels than this then the last channel will be duplicated to give the requested number, else if the input has more channels than requested then the additional channels will be ignored.

If desired_samples is set, then the audio will be cropped or padded with zeroes to the requested length.

The first output contains a Tensor with the content of the audio samples. The lowest dimension will be the number of channels, and the second will be the number of samples. For example, a ten-sample-long stereo WAV file should give an output shape of [10, 2].

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DecodeWav.Options Optional attributes for DecodeWav

Field Summary

Fields inherited from class org.tensorflow.op.PrimitiveOp

operation

Method Summary

Modifier and Type	Method and Description
Output<Float>	audio() 2-D with shape `[length, channels]`.
static DecodeWav	create(Scope scope, Operand<String> contents, DecodeWav.Options... options) Factory method to create a class wrapping a new DecodeWav operation.
static DecodeWav.Options	desiredChannels(Long desiredChannels)
static DecodeWav.Options	desiredSamples(Long desiredSamples)
Output<Integer>	sampleRate() Scalar holding the sample rate found in the WAV header.

Methods inherited from class org.tensorflow.op.PrimitiveOp

equals, hashCode, op, toString

Methods inherited from class java.lang.Object

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

Method Detail

create

public static DecodeWav create(Scope scope,
                               Operand<String> contents,
                               DecodeWav.Options... options)

Factory method to create a class wrapping a new DecodeWav operation.

Parameters:

scope - current scope

contents - The WAV-encoded audio, usually from a file.

options - carries optional attributes values

Returns:

a new instance of DecodeWav

desiredChannels

public static DecodeWav.Options desiredChannels(Long desiredChannels)

Parameters:

desiredChannels - Number of sample channels wanted.

desiredSamples

public static DecodeWav.Options desiredSamples(Long desiredSamples)

Parameters:

desiredSamples - Length of audio requested.

audio

public Output<Float> audio()

2-D with shape `[length, channels]`.

sampleRate

public Output<Integer> sampleRate()

Scalar holding the sample rate found in the WAV header.