Java Glossary : sound

Last updated 2004-06-28 by Roedy Green ©1996-2004 Canadian Mind Products

Java definitions: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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sound

Here are some places where you can find canned sounds: Microsoft extra sound schemes SoundAmerica or pcug. You can get Star Trek sounds at Nexus1.net.

Windows stores its *.wav files in C:\WINNT\media.

I have posted some source code to create sounds mathematically, i.e. create AU files in RAM and play them with sun.audio.AudioPlayer.start. If you feed it a Math.sin wave for example you will hear an smooth continous tone of the same frequency as the sine wave. You can create any theoretically possible sound. All you need is a way of mathematically describing it, or providing a list of amplitudes. sun.audio is not an official class. It is accessible in Applets in JDK 1.1, not in JDK 1.2, but is now back again in JDK 1.4.

You can also play AU, wav, MIDI and aiff files with java.applet.AudioClip.play . For AU files use G.711 µ-law format not PCM. RealPlayer is required for ra files.

You can use javax.sound.midi to play MIDI files.

You can use javax.sound.sampled.SourceDataLine can be used to merge sampled datastreams and play a variety of sound files.

Playing A Sound

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Sythesizing Sound Mathematically

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Common Sound File Types

extension	purpose
*.aiff	MacIntosh uncompressed audio
*.asf	Microsoft media files
*.au	Unix uncompressed audio
*.avi	earlier Microsoft video format
*.mp3	mpeg audio
*.mpeg	mpeg video
*.ra	RealAudio
*.ram	RealAudio
*.rm	RealAudio
*.wav	Microsoft uncompressed audio
*.wma	Microsoft audio files
*.wmv	Microsoft video files

The official Java sound interface is called JMF. It can play many audio and video file formats including MP3.

AU ¤ beep ¤ ClipStream ¤ Crescendo ¤ Freedom Audio ¤ IMF ¤ Java Sound FAQ ¤ JavaZoom MP3 player ¤ JMF ¤ JSAPI ¤ MIDI ¤ MIME ¤ MP-3 ¤ Real Audio ¤ sound-on-the-fly ¤ Soundbite ¤ Speaker: make tones on the built-in PC Speaker from Java ¤ wav

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