Forum: Analog Circuits Acoustic coupler

Author: Wally Walters (wally234)
Posted on:
Attached files:

Rate this post
0 useful
not useful

i'm working on a Speechrecognition project with Arduino and EasyVR Modul 

All works perfect when i bring a dictaphone speaker near to the EasVR- 
modules microphone.

Now i want to substituate the speaker and the microphone
by some electronic parts similar as a optocoupler or
transformator but i have no idea how to and not a lot of psace
to place big part..

How can i connect the dictaphone output signal directly to
the microphone input ?  (without burning the DSP-chip.

Maybe a simple RC circuit is sufficient (?) but first trials

Any idea or hint highly welcome.


: Moved by Admin


Entering an e-mail address is optional. If you want to receive reply notifications by e-mail, please log in.

Rules — please read before posting

  • Post long source code as attachment, not in the text
  • Posting advertisements is forbidden.

Formatting options

  • [c]C code[/c]
  • [avrasm]AVR assembler code[/avrasm]
  • [code]code in other languages, ASCII drawings[/code]
  • [math]formula (LaTeX syntax)[/math]

Bild automatisch verkleinern, falls nötig
Note: the original post is older than 6 months. Please don't ask any new questions in this thread, but start a new one.