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Need audio tranducer to 50 khz

Discussion in 'Electronic Design' started by amdx, May 23, 2008.

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  1. amdx

    amdx Guest

    I'm looking for a transducer and preamp to record audio up to 50khz.
    Seen any circuits or transducers for this bandwidth?
  2. Phil Allison

    Phil Allison Guest


    ** You have made two mistakes already.

    The term "audio" refers to an * electronic signal* with band limits the
    same as the ( human) audible frequency range - ie 20Hz to 22 kHz.

    So - do you want to detect and record only supersonic sounds OR do you
    want to be a total wanker and extend the audio band to supersonic
    frequencies for audiophool reasons ??

    ....... Phil
  3. amdx

    amdx Guest

  4. amdx

    amdx Guest

    Neither, I want to record vibrations of air molecules up to 50khz.
    Thanks for the clarification, all without name calling. Well, "wanker"
    but that doesn't even register when coming from you.
    Mike ;-)
  5. Eeyore

    Eeyore Guest

    Tssk @ you Phil.

    That's "ultrasonic". Made the same mistake myself before of course.

    Maybe he wants to record bats ?

  6. Any idea what the panasonic electrets mics are like above 20K?

  7. BobG

    BobG Guest

    The piezo tweeter horns come in about 2K and up go to about 40khz
  8. Phil Allison

    Phil Allison Guest


    ** Just as ambiguous and meaningless as your last post - wanker.

    Kindly state the LOWER limit of your frequency range.

    Then state the lowest SPL you need to resolve - cos resolving random
    molecular motion is a very big ask.

    ....... Phil
  9. Phil Allison

    Phil Allison Guest


    ** Likey the ones hanging out in his belfry ....

    ...... Phil

  10. ISTR that WES had a variety of "ultratweeters" with responses even
    above 100KHz, with response data to back it up. Check in their PDF

    Clifford Heath.
  11. Bob Eld

    Bob Eld Guest

    Are you saying you want to record the thermal noise of the air?
    If so, how do you expect to differentiate from the thermal noise of
    everything else, the diaphragm, case, backplate input resistance, amplifier
    noise, etc., etc.?

    Some clarification of the total frequency range, bottom to top, plus the
    displacement, velocity or SPL level expected would be of help. If it is
    sound waves you are trying to measure, what is their source?
  12. neon


    Oct 21, 2006
    you got him straight yet 50 kc i am not sure that i can hear 10 kc language for most people is limited to 5 kc like AM band. some guitars amps go up to 100 kc because they modulate to get histeric sick about it.
  13. amdx

    amdx Guest

    No, just getting info to record sound from 20 hz to 50 khz, the source
    of sound would be a muzzle blast. This seems to be an inexpensive solution
    get the frequency response.
    Thanks, Mike
  14. Phil Allison

    Phil Allison Guest


    ** ROTFL !!

    Lotsa luck - pal .

    ....... Phil
  15. amdx

    amdx Guest

    Where is the luck needed Phil?
  16. Phil Allison

    Phil Allison Guest

    "Phil Allison"

    ** God, you are so dumb.

    Where does it say that electret capsule is flat to 50kHz ?

    Where does it say it can handle the huge SPLs of a gun shot ?

    BTW What is this "muzzle blast" ?

    From a BB gun ?

    A .44 magnum ?

    An 8 inch Howitzer ?

    At what distance??

    ROTFL !!!

    What a fucking, know nothing WANKER !!

    ....... Phil
  17. amdx

    amdx Guest

    I don't see that the article says it is flat to 50khz it also doesn't say
    it isn't flat to 50 khz.
    The original info I received said the modified WM-60AY had a frequency
    response from 20 hz to 66 khz, but it didn't say +/- 3db, +/- 10db or +/-
    30db so it does lack some detail.
    The article doesn't say anything about SPL's of gun shot. It says the
    modified WM-60AY can swing 5vpp max at 141db SPL. I don't know if that is
    enough, but I suspect the distance can be adjusted to reduce the SPL.
    Can you add anything that will help the project?
    Something between a .22 and a .44.
    Why this need to degrade and name call that comes through in almost all of
    your posts? Does it make you feel good about yourself? That is a poor
    substitute for real self esteem. I do want to compliment you, I have seen a
    decrease in the worst of your tyrades. Keep up the self contemplation, I
    know it's hard work, but your doing better everyday.
  18. PeterD

    PeterD Guest

    So you assume it is flat? Good move.
    So it's useless.
    Cuz he's Patrick. Reason enough.
  19. Phil Allison

    Phil Allison Guest


    ** Bet you think the earth is flat cos it don't look bent .....

    ROTFLMAO !!!

    ** Please tell us, cos we would all dearly like to know.....

    What frequency are the Martians transmitting to you on ???

    AM or FM ??????????

    ** QED.

    ** Go away from the source and there are no supersonic frequencies left.

    ** Gotta know what the **** you are trying to do first -


    ** No precise answer possible ??

    Thought so.

    ** Why the need to post ASININE BULLSHIT TROLLS ???

    Say what YOU fucking want to do and why !!!!!!!!!!!!!!!!!!!!!!

    Or else - GO DROP DEAD !!!


    ...... Phil
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