DecodeWav

public final class DecodeWav

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 Classes

class DecodeWav.Options Optional attributes for DecodeWav

Constants

String OP_NAME The name of this op, as known by TensorFlow core engine

Public Methods

Output<TFloat32>	audio() 2-D with shape `[length, channels]`.
static DecodeWav	create(Scope scope, Operand<TString> contents, 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<TInt32>	sampleRate() Scalar holding the sample rate found in the WAV header.

Inherited Methods

From class org.tensorflow.op.RawOp

final boolean	equals(Object obj)
final int	hashCode()
Operation	op() Return this unit of computation as a single `Operation`.
final String	toString()

From class java.lang.Object

boolean	equals(Object arg0)
final Class<?>	getClass()
int	hashCode()
final void	notify()
final void	notifyAll()
String	toString()
final void	wait(long arg0, int arg1)
final void	wait(long arg0)
final void	wait()

From interface org.tensorflow.op.Op

abstract ExecutionEnvironment	env() Return the execution environment this op was created in.
abstract Operation	op() Return this unit of computation as a single `Operation`.

Constants

public static final String OP_NAME

The name of this op, as known by TensorFlow core engine

Constant Value: "DecodeWav"

Public Methods

public Output<TFloat32> audio ()

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

public static DecodeWav create (Scope scope, Operand<TString> contents, 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

public static DecodeWav.Options desiredChannels (Long desiredChannels)

Parameters

desiredChannels	Number of sample channels wanted.

public static DecodeWav.Options desiredSamples (Long desiredSamples)

Parameters

desiredSamples	Length of audio requested.

public Output<TInt32> sampleRate ()

Scalar holding the sample rate found in the WAV header.