![]() Soundcard driver is installed on my Linux system? 5.8. What are the requirements for using the direct audio "Direct Audio Device" mixers on Linux? 5.6. ![]() I've installed ALSA and the JDK 1.4.2 to takeĪdvantage of the ALSA support. Which soundcard driversĬan be used by Java Sound? 5.2. "Direct Audio Device" mixers are available, too? 5. "Java Sound Audio Engine" in the JDK 1.5.0 though the What formats are supported by "Direct Audio Device"įormats? 4.9. Why can I record fromĭifferent soundcards, but not play back to them? 4.6. Can I use multiple soundcards at the same time? 4.5. How can I redirect sound output toĪ phone / modem device? 4.4. Why is it not possible to use large buffers for aĭataLine with 1.5.0? 4. Why does a line have the default buffer size though a Why is there no sample rate control in 1.5.0? 3. Why does obtaining a gainĬontrol work with 1.4.2, but not with 1.5.0? 2.5. Why do mono lines from a "Direct Audio Device" have no What is the difference between aĬontrol? Which one should I use? 2.3. Instances I get when using the "Direct Audio Device" (ALSA on Why are there failures,Ĭlicks and other random effects if a clip is played Why does theįrame/microsecond position not jump back to zero when aĬlip is looped? 1.4.5. Why do I get "LineUnavailableException: No Free How can I control the volume when recording with a Why do I get a LineUnavailableException: "Requestedįormat incompatible with already established deviceįormat"? 1.3.5. Why is in not possible to open more than one Specific source (microphone or line-in)? 1.3.2. Why is playback distorted, tooįast or too slow with the JDK 1.5.0 beta, but not withĮarlier versions of the JDK? 1.3. Notifying applications of an underrun/overrunĬondition? 1.1.14. What is the differenceĭataLine.isRunning()? 1.1.12. Why does DataLine.getLevel()Īlways return -1? 1.1.11. Though it's actually the other way round? 1.1.9. With the "Direct Audio Devices" mixers on Linux? 1.1.8. Why doesn't simultaneous recording and playback workĪt all with the Sun JDK 1.3/1.4 on GNU/Linux? 1.1.6. Work when first opening the playback line Why does simultaneous recording and playback only ![]() Why does it fail to open any line with 16 kHz sampleįormat? 1.1.4. ![]() How can I be notified when data is available for To play sound using Clip, the process need to be alive.Audio Programming 1. The mixer may mix the samples with those from other sources and then deliver the mix to a target (usually an audio output device on a sound card). Audio samples are then loaded into it, and delivered to the mixer. To play sampled audio, you create an instance of a SourceDataLine or a Clip, which acts as a source to the software audio mixer. JOAL (Java Bindings on OpenAL) supports 3D sound effect. Java Media Framework (JMF), which is not part of JavaSE, is needed to support MP3 and advanced features. Java Sound API also include a software sound mixer that supports up to 64 channels for sound effect and background music. Musical Instrument Digital Interface (MIDI): MIDI music is synthesized from musical notes and special sound effects, instead of time-sampled, like a recipe for creating musical sound.The samples can be either 8-bit or 16-bit, with sampling rate from 8 kHz to 48 kHz. The supported file formats are: "wav", "au" and "aiff". Sampled Audio: Sampled audio is represented as a sequence of time-sampled data of the amplitude of sound wave.JavaSE, via Java Sound API (in packages javax.sound), supports two types of audio:
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