- Enclosing class:
public static class AudioFormat.Encoding extends Object
Encodingclass names the specific type of data representation used for an audio stream. The encoding includes aspects of the sound format other than the number of channels, sample rate, sample size, frame rate, frame size, and byte order.
One ubiquitous type of audio encoding is pulse-code modulation (PCM), which is simply a linear (proportional) representation of the sound waveform. With PCM, the number stored in each sample is proportional to the instantaneous amplitude of the sound pressure at that point in time. The numbers may be signed or unsigned integers or floats. Besides PCM, other encodings include mu-law and a-law, which are nonlinear mappings of the sound amplitude that are often used for recording speech.
You can use a predefined encoding by referring to one of the static
objects created by this class, such as
PCM_UNSIGNED. Service providers can create new encodings, such as
compressed audio formats, and make these available through the
Encoding class is static, so that all
objects that have the same encoding will refer to the same object (rather
than different instances of the same class). This allows matches to be
made by checking that two format's encodings are equal.
Fields Modifier and Type Field Description
static AudioFormat.EncodingSpecifies a-law encoded data.
static AudioFormat.EncodingSpecifies floating-point PCM data.
static AudioFormat.EncodingSpecifies signed, linear PCM data.
static AudioFormat.EncodingSpecifies unsigned, linear PCM data.
static AudioFormat.EncodingSpecifies u-law encoded data.
Constructors Constructor Description
String name)(Constructs a new encoding.
PCM_SIGNEDpublic static final AudioFormat.Encoding PCM_SIGNEDSpecifies signed, linear PCM data.
PCM_UNSIGNEDpublic static final AudioFormat.Encoding PCM_UNSIGNEDSpecifies unsigned, linear PCM data.
PCM_FLOATpublic static final AudioFormat.Encoding PCM_FLOATSpecifies floating-point PCM data.
ULAWpublic static final AudioFormat.Encoding ULAWSpecifies u-law encoded data.
ALAWpublic static final AudioFormat.Encoding ALAWSpecifies a-law encoded data.
Encodingpublic Encoding(String name)Constructs a new encoding.
name- the name of the new type of encoding
equalspublic final boolean equals(Object obj)Indicates whether the specified object is equal to this encoding, returning
trueif the objects are equal.
hashCodepublic final int hashCode()Returns a hash code value for this encoding.
toStringpublic final String toString()Returns encoding's name as the string representation of the encoding. For the predefined encodings, the name is similar to the encoding's variable (field) name. For example,
PCM_SIGNED.toString()returns the name "PCM_SIGNED".