B4J Question Play audio through selected soundcard

[Rich Blackmore]

I want to play different audio files through multiple sound cards.

So in B4J play audio ring.wav through one usb soundcard then play DTMF.wav through another usb soundcard.


Does anyone know how I can do this?

 

[Erel]

I don't think that it is possible.

 

[stevel05]

It should be possible, you will need to wrap (at least partially) javax.sound.sampled.AudioSystem class : https://docs.oracle.com/javase/7/docs/api/index.html?javax/sound/sampled/AudioSystem.html and a few others. Or access them via javaObject.

I have been playing with the midi implementation lately and the device management works in a similar manner. It's not that straightforward but doable.

 

[stevel05]

There is a little info here which may help. https://stackoverflow.com/questions/37609430/play-sound-on-specific-sound-device-java

 

[stevel05]

Out of curiosity, I built the example in the link above, so it should get you started. It just plays a little brass riff on all of the attached output devices. (the wav file is why the file is so large)

Edit amended version in post #7

 

[Rich Blackmore]

Wow that is great.. And works great thank you so much for you efforts will defo use this in my project.

Your a star!!!

 

[stevel05]

It has been bought to my attention that my example was no longer working, I have amended it so it now works again. Please use the attached version.

 

[stevel05]

And a version that uses inline java instead of reflection in case you are worried by the illegal reflection warnings in Java 11

 

[Philip Prins]

And a version that uses inline java instead of reflection in case you are worried by the illegal reflection warnings in Java 11

Hello Steve,

Is this also possible with a stream of bytes from an UDP port?

 

[stevel05]

Yes, should be possible provided that the connection is fast enough, there is another example here that may help that doesn't use audioclip.