java.lang.Object javax.sound.sampled.AudioFormat.Encoding
The Encoding class 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 are frequently signed or unsigned integers. 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_SIGNED or PCM_UNSIGNED. Service providers can create new encodings, such as compressed audio formats or floating-point PCM samples, and make these available through the AudioSystem class.
The Encoding class is static, so that all AudioFormat 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.
Field Summary | |
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static AudioFormat.Encoding |
ALAW
Specifies a-law encoded data. |
static AudioFormat.Encoding |
PCM_SIGNED
Specifies signed, linear PCM data. |
static AudioFormat.Encoding |
PCM_UNSIGNED
Specifies unsigned, linear PCM data. |
static AudioFormat.Encoding |
ULAW
Specifies u-law encoded data. |
Constructor Summary | |
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AudioFormat.Encoding
(
String
Constructs a new encoding. |
Method Summary | |
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boolean |
equals
(
Object
obj) Finalizes the equals method |
int |
hashCode
() Finalizes the hashCode method |
String |
toString
() Provides the String representation of the encoding. |
Methods inherited from class java.lang. Object |
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clone , finalize , getClass , notify , notifyAll , wait , wait , wait |
Field Detail |
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public static final AudioFormat.Encoding PCM_SIGNED
public static final AudioFormat.Encoding PCM_UNSIGNED
public static final AudioFormat.Encoding ULAW
public static final AudioFormat.Encoding ALAW
Constructor Detail |
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publicprotectedAudioFormat.Encoding(String name)
Method Detail |
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public final boolean equals(Object obj)
public final int hashCode()
public final String toString()