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ubuntu - Use ALSA pcm outputs via the Java …

https://stackoverflow.com/questions/9381940/use-alsa-pcm-outputs-via-the-java-soundsystem

I have a sound card with multiple outputs and use ALSA to map them to 2 separate stereo channels. The configuration works fine and allows me, for example with speaker-test to play audio on them. I now want to use those 2 stereo outputs in a Java program, using the AudioSystem API. However, the stereo1 and stereo2 dont' show up using MixerInfo.

Java Sound (alsa): Can't get a line (sound output)

https://www.linuxquestions.org/questions/programming-9/java-sound-alsa-can%27t-get-a-line-sound-output-592730/

Java Sound (alsa): Can't get a line (sound output) ... Mixer: Java Sound Audio Engine: Software mixer and synthesizer The line doesn't match the format! Mixer: Port ICH5 [hw:0]: Intel ICH5, Realtek ALC202 rev 0 Illegal Argument! Couldn't find a line. If I change it to big endian, I get the same output (except for the format, of course).

Java Sound API: What's new in version 1.5.0

https://www.oracle.com/java/technologies/tiger.html

Optimized direct audio access is implemented on all platforms (RFEs 4908240 and 4908879 ). It is enabled by default on systems which offer native mixing (i.e. Linux ALSA with hardware mixing, Solaris Mixer enabled, Windows DirectSound); The new real-time Sequencer works with all MIDI devices and allows unlimited Transmitters (RFE 4773012 );

Java Sound

https://docs.oracle.com/en/java/javase/15/troubleshoot/java-sound.html

Java Sound supports a set of audio file formats, for example AU, AIF, and WAV. Most of the file formats are only containers and can contain audio data in various compressed audio formats. Java Sound file readers support some formats (uncompressed PCM, a-law, mu-law), but do not support ADPCM, MP3, and others.

Java Sound - Oracle

https://docs.oracle.com/en/java/javase/11/troubleshoot/java-sound.html

[SOLVED]Problems with ALSA, GStreamer, Java + PulseAudio ...

https://bbs.archlinux.org/viewtopic.php?id=191668

Registered: 2012-10-16. Posts: 14,437. Re: [SOLVED]Problems with ALSA, GStreamer, Java + PulseAudio. Java doesn't have direct pulseaudio support, you can however install pulseaudio-alsa and the alsa-plugins in order to have a configuration file which sets ALSA programs to use the pulseaudio plugin. Last edited by V1del (2017-12-21 17:43:18 ...

How can I make my Java application with audio play nice …

https://stackoverflow.com/questions/1941523/how-can-i-make-my-java-application-with-audio-play-nice-in-linux

Java Sound is terrible for high-precision or low-latency tasks, and almost totally dysfunctional on Linux. Abandon ship now before you sink more time into it. After Java Sound I tried OpenAL which wasn't great on Linux either. Currently I'm using FMOD which is unfortunately closed-source. The open source way to go would probably be PortAudio.

Recording audio from web-based audio player using ALSA ...

https://itectec.com/unixlinux/recording-audio-from-web-based-audio-player-using-alsa-loop-device/

$ alsaplayer audio.mp3 $ alsaplayer -d loop audio.mp3 $ mplayer -vo null video.mp4 $ mplayer -vo null -ao alsa:device=loop video.mp4 AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample) $ mplayer -ao alsa:device=loop audio.mp3 AO: [alsa] 48000Hz 2ch floatle (4 bytes per sample) all sending audio to loop and playing to speakers OK

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