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Ask an Expert Forum Use sound exicter to produce vibration with esp32
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Use sound exicter to produce vibration with esp32

AndrewT
AndrewT over 2 years ago

Hi everyone! I want to use a sound exciter as a haptic motor which produces the vibration. However, it always makes some noise.

How can I reduce the noise as much as possible? eg the editing program.

Thank you!

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Top Replies

  • BigG
    BigG over 2 years ago +3
    Sound exciters only make a noise because the wave form it produces resonates across a surface. Thus if you removed the sound exciter from any surface it won't make much noise. Similarly, if you placed…
  • shabaz
    shabaz over 2 years ago in reply to AndrewT +2
    Impressed at the 279 euro price tag! It's overpriced by about 250 euro, considering it's just a small Bluetooth speaker with perhaps a few motors added too, and a bit of basic signal processing. Although…
  • michaelkellett
    michaelkellett over 2 years ago +1
    The clue is in the name a sound exciter (AKA a loudspeaker) is designed to make a noise ! A vibration exciter is designed to make vibration. There are loads on Ebay and Amazon, not expensive. This…
  • michaelkellett
    michaelkellett over 2 years ago

    The clue is in the name a sound exciter (AKA a loudspeaker) is designed to make  a noise !

    A vibration exciter is designed to make vibration.

    There are loads on Ebay and Amazon, not expensive.

    This is  case where using the right part is the right way !

    MK

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  • dougw
    dougw over 2 years ago

    Try mounting it in foam rubber.

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  • anniel747
    anniel747 over 2 years ago

    Is it a Dayton Audio exciter? Model number?

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  • anniel747
    anniel747 over 2 years ago in reply to michaelkellett

    Vibration exciters are quite expensive due to their niche market.

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  • anniel747
    anniel747 over 2 years ago in reply to dougw

    That would work if the noise comes from the coil but if the noise comes from the activating arm or the activated media the resonant frequency of the whole system could be mitigated in software.

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  • michaelkellett
    michaelkellett over 2 years ago in reply to anniel747

    Admittedly "expensive" is a subjective term but I don't think many would consider these to be expensive.

    And one in every phone is hardly a niche market !

    www.aliexpress.com/.../1005004438942136.html

    MK

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  • anniel747
    anniel747 over 2 years ago in reply to michaelkellett

    Those are not vibration exciters, they are motor driven vibrators.

    www.bksv.com/.../measurement-exciters

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  • anniel747
    anniel747 over 2 years ago in reply to michaelkellett

    Sound exciter: www.daytonaudio.com/.../exciters

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  • michaelkellett
    michaelkellett over 2 years ago in reply to anniel747

    Since the OP hasn't described his problem in much detail it's not exactly clear what he needs or is trying to do.

    Perhaps he'll respond and explain.

    I've not seen the Dayton things before.

    MK

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  • anniel747
    anniel747 over 2 years ago in reply to michaelkellett

    It's simply the motor part of a speaker without the cone or basket frame.

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