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Converting sound to electrical energy

  1. Aug 21, 2013 #1
    Is there any possibility to converting sound energy to electrical energy by using piezo electric material.
     
  2. jcsd
  3. Aug 21, 2013 #2

    Baluncore

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    Yes. It has been done for over 50 years in ceramic cartridges for record players and in some microphones.
     
  4. Aug 22, 2013 #3
    Also used inguitar pickups
     
  5. Aug 24, 2013 #4

    Redbelly98

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    Moderator's note: posts on a new topic were moved from original thread to newly created thread.
     
  6. Aug 24, 2013 #5

    SteamKing

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    It used to be done all the time with the POT device (POT = plain old telephone)

    http://www.packetworks.net/res/pub/images/phone_red.jpg
     
  7. Aug 24, 2013 #6

    Averagesupernova

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    I thought plain old telephones used a carbon mic.
     
  8. Aug 24, 2013 #7
    I think Av.... is correct,I also dont think old fashioned phones used piezo crystals as microphones or speakers
     
  9. Aug 24, 2013 #8

    sophiecentaur

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    I think the question is more to do with what we mean by 'Energy'. Is it 'Energy' as a detectable signal or 'Energy' in the quantity that could be used as a useful resource.
    As has been stated dozens of times before, there is just not enough 'Energy' around, in the form of sound, to provide us with any significant amount as a resource. A few milliWatts (maximum) is just not enough to make a significant difference to our lives.
    To live in any conditions where there would be enough sound level to drive any of our equipment would involve wearing ear protectors and doing ourselves physical harm, probably. Do you want to live in the Dartford Tunnel or at the end of a Heathrow runway?
     
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