# Package javax.sound.sampled.spi

package javax.sound.sampled.spi
Supplies abstract classes for service providers to subclass when offering new audio devices, sound file readers and writers, or audio format converters.

## Related Documentation

For more information on using Java Sound see:

- The Java Sound Tutorial

Please note: In the `javax.sound.sampled.spi` APIs, a `null` reference parameter to methods is incorrect unless explicitly documented on the method as having a meaningful interpretation. Usage to the contrary is incorrect coding and may result in a run time exception either immediately or at some later time. `NullPointerException` is an example of typical and acceptable run time exception for such cases.

Since:
  1.3

Related Packages
Package
Description
javax.sound.sampled
Provides interfaces and classes for capture, processing, and playback of sampled audio data.
Classes
Class
Description
AudioFileReader
Provider for audio file reading services.
AudioFileWriter
Provider for audio file writing services.
FormatConversionProvider
A format conversion provider provides format conversion services from one or more input formats to one or more output formats.
MixerProvider
A provider or factory for a particular mixer type.