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Re: Reading sound output in Java

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On 10/26/2013 3:26 AM, Lew wrote:
> Joerg Meier wrote:
>> Lew wrote:
>>> GGolf wrote:
>>>> Lew wrote:
>>>>> GGolf wrote:
>>>>>> Is there a way to read the output that the speakers produce?
>>
>>>>> Are you talking about using a microphone to record the speaker sound,
>>>>> and reading that in a program?
>>
>>>> Yes, but using software instead of hardware. Basically, the "Stereo Mix"
>>>> option that most systems had built-in years ago.
>>
>>> You're contradicting yourself, or else I'm not getting you. You said "Yes" to the
>>> microphone question, but you aren't using hardware. What?
>>
>>> I have no notion of what you mean by the "Stereo Mix" option.
>>
>>
>> In Windows (and. presumably, other OSs), you can record "What you hear", as
>> in, you can record whatever your speakers are playing. This is done on a
>> software level, so it works even if you have no speakers or microphones. It
>> seems to just intercept and copy the data that gets sent to the speaker
>> output. I would guess that's what he want.
>
> Maybe, but what he asked for was "the output that the speakers produce", not the
> signal that is input to the speakers.

Sorry for being so vague. I should have said "the signal that is input 
to the speakers".

>
> If he wants the signal as sent to the speakers, does he want the actual electrical
> signal, decoded and turned into some file format, or does he want a copy of the
> MP3 or WAV or whatever generated that signal, or what?
>

I _think_ either will do.

Let me tell you the use case: I want to
(i) capture a VOIP conversation (which could be between multiple 
participants, or just two participants), and
(ii) convert that to text using a speech recognizer (using one of the 
various implementations of JSAPI), and
(iii) display that text on screen.

Note that this will also mean that I should be able to capture the input 
to the microphone at the same time. However, if I just get the signal 
that's input to the speakers, I think that would be a great beginning - 
I could at least transcribe the incoming side.

> You can guess all you want, but absent the *OP* answering the question, it is only a guess.
>
> As another responder said, the question is vague, and certainly ambiguous.
>
> So, OP, how about it? Are you going to ask a good question, or give up on getting a
> good answer?

I hope I've clarified the question at least a little more, based on your 
useful hints.

I also aim to try experimenting with the Java Sound API as suggested by 
JensJ and others elsethread.

>
> The technique you use will depend on exactly what you want.
>

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Thread

Reading sound output in Java GGolf <invalid@invalid.com> - 2013-10-22 08:52 +0530
  Re: Reading sound output in Java Lew <lewbloch@gmail.com> - 2013-10-23 16:00 -0700
    Re: Reading sound output in Java GGolf <invalid@invalid.com> - 2013-10-24 15:43 +0530
      Re: Reading sound output in Java Jeff Higgins <jeff@invalid.invalid> - 2013-10-24 11:47 -0400
      Re: Reading sound output in Java Lew <lewbloch@gmail.com> - 2013-10-24 11:18 -0700
        Re: Reading sound output in Java Jeff Higgins <jeff@invalid.invalid> - 2013-10-24 16:27 -0400
          Re: Reading sound output in Java Jeff Higgins <jeff@invalid.invalid> - 2013-10-24 16:36 -0400
        Re: Reading sound output in Java Joerg Meier <joergmmeier@arcor.de> - 2013-10-25 13:47 +0200
          Re: Reading sound output in Java Lew <lewbloch@gmail.com> - 2013-10-25 14:56 -0700
            Re: Reading sound output in Java GGolf <invalid@invalid.com> - 2013-10-26 14:17 +0530
              Re: Reading sound output in Java Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-10-26 09:32 +0000
                Re: Reading sound output in Java GGolf <invalid@invalid.com> - 2013-10-26 15:40 +0530
                Re: Reading sound output in Java Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-10-26 11:45 +0000
                Re: Reading sound output in Java Jeff Higgins <jeff@invalid.invalid> - 2013-10-26 11:36 -0400
                Re: Reading sound output in Java Jeff Higgins <jeff@invalid.invalid> - 2013-10-26 11:49 -0400
                Re: Reading sound output in Java Jeff Higgins <jeff@invalid.invalid> - 2013-10-26 13:10 -0400
              Re: Reading sound output in Java Jeff Higgins <jeff@invalid.invalid> - 2013-10-26 12:43 -0400
  Re: Reading sound output in Java Jens - 2013-10-25 08:03 +0200

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