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amplified EMIC clicking at termination of each audible statement — Parallax Forums

amplified EMIC clicking at termination of each audible statement

shmowshmow Posts: 109
edited 2010-01-26 22:41 in Accessories
Hello All,
I have an EMIC module connected via AOUT and GND pins to an amplifier (then to an 8 ohm horn-type speaker).
I've discovered that every time "she" speaks there is a clicking sound when she stops. I've put a capacitor/resister combination in parallel with the amplifier's outputs (to speaker), but without success.
Is there a remedy you can recommend?
Regards,
Shmow

Comments

  • dandreaedandreae Posts: 1,375
    edited 2010-01-26 15:33
    What happens if you remove the amplifier circuit and connect the speaker directly to the Aout pin?

    Dave



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    Dave Andreae

    Parallax Tech Support·
  • shmowshmow Posts: 109
    edited 2010-01-26 15:51
    Dave,
    there isn't this click; but I need "her"voice to be heard from afar.
    Shmow
  • Paul Sr.Paul Sr. Posts: 435
    edited 2010-01-26 22:41
    shmow said...
    Hello All,
    I have an EMIC module connected via AOUT and GND pins to an amplifier (then to an 8 ohm horn-type speaker).
    I've discovered that every time "she" speaks there is a clicking sound when she stops. I've put a capacitor/resister combination in parallel with the amplifier's outputs (to speaker), but without success.
    Is there a remedy you can recommend?
    Regards,
    Shmow

    Are you sure that the amp output impedance is right for the 8 ohm speakers? Sounds like some type of back emf thing going on.
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