Triggering audio question

Hi,
I am hacking a Furby connect, it is going inside a well known video game enemy and it turns out that changing the audio on it isn't really possible without loads of mucking about.
My options are-
Some kind of voice changer, it will still call its self a Furby and these usually are pressed against the speaker, im working with limited space.

I only really need it to make 4 sounds.
I have one of those Audio FX boards, and was wondering would I be able to trigger it to play a random audio file using the Furbys speaker connection.
IE it sends a signal to it, but instead of it outputting a noise I have it so that the signal triggers the board to output a noise.

Furby tries make noise (no speaker) >Audio FX board gets signal from its wire>That plays noise.

A few more details. You need 4 sounds how are they going to be created. The Addio FX in an 80 x 80 audio amplifier, not a control unit. I believe you will destroy the speaker with the FX device. Speakers are normally outputs, not inputs but they can be. What are your plans for switching the speaker between sensor and output? Please define "the signal ". Posting a partial schematic of what you have will help us help you.


Excuse the rather crude drawing, its the best I could do.

Basically.

  1. The Furby wants to generate its "Noises" so would send the sound to the speaker.
  2. Instead of the speaker the signal goes to the Audio FX board
  3. That triggers the board to play one of four sounds
  4. That comes out of the speaker thats plugged into the board.

What I would do, is make some kind of envelope detector, because probably the output sounds are always the same and it isn't necessary to decode it completely, just get a reliable fingerprint of the sound.

So with that I can make it turn the outgoing sound to a "Hey wake up and do the thing" signal?

From your post, I thought you had that part covered... the fourth sentence in your OP.

That is one of the details that you were asked to explicate back in reply #2. So for example we need some links or specs on your "one of those Audio FX boards", whatever that is. Looks like you miss-spelled it too. We don't do free internet research here, it's up to you to provide the data.

Considering your question, the answer is "probably".

This is the board im talking about

Sure, what have you learned about it so far? You say you have one, what have you done with it so far?

I don't know what your problem is.
I'm asking a question and instead getting jib for it

The problem is simply that you are not providing enough information to someone who wishes to help solve it. That is not my problem, it's yours. Any jib is purely in your mind, my question was asked completely at face value... I really wanted to know because you didn't say one way or the other. Remember, we can't see any part of what you have there, only what you type...

Knowing what you have done with the board, would be enormously helpful in directly answering your question in reply #5.

You've asked me about interfacing a certain board. If you have used it, and already made circuits with it and so on, it would be a waste of time for anyone to comment about possible interface circuits without the benefit of knowing what you have already done. That should be obvious.

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