Java Speech Example: Encode, Stream, Decode, Play

Question

I have been trying to find an example of this that I could use for a couple years, I'm ashamed to admit. I would like to see a working, compileable example (most that I find online don't compile or don't actually work) of reading from the microphone, encoding the voice data in a speech-friendly encoding such as Speex, and streaming that information in real time to a Decoder which then plays the audio. I suppose this example would simply echo what is said. I would like to ultimately use this to learn to make an audio mixing chat server.

Answer 1

Since no one has posted an answer yet, I guess the answer is to build your own free source thing out of the Java Speech API.

Answer 2

look here for an example of exactly what you want with the source code. I don't think it does capture, but just the streaming. For audio capture, see here.

For encoding the audio, you probably need an external library like this.

And here is a guide to what you want using the javasound api.

Answer 3

take a look at sphinx4 from cmu

http://cmusphinx.sourceforge.net/sphinx4/

it works fairly well and can be wired in with some other systems for that very purpose (take a look at gstreamer)

Answer 4

There are lot's of existing software for this and some of them with open source. For example you can check this sip webphone