I have a 16-46+ should I hear 20 hz sound and below?

Discussion in 'Archived Threads 2001-2004' started by Marcus Lewis, Mar 13, 2002.

  1. Marcus Lewis

    Marcus Lewis Stunt Coordinator

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    I was running my Avia disk yesterday that I just got and when the test tone went down to 25hz or so I could hardly hear anything. At 22hz or so ... nothing ... Is this normal?

    Unfortunately an SPL meter is 70US here (Trinidad) does anyone know where I can order one online?

    Thanks in advance ...
     
  2. Ned

    Ned Supporting Actor

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    Below 25hz the sensation if more felt than heard. The floor will seem to be quivering as it reaches 20hz. Below 20hz I dunno, have the 20-39 which falls off fast and I have it highpassed
     
  3. ColinM

    ColinM Cinematographer

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    If I play a 20 - 23hz tone I won't hear it either...but if I go upstairs, I can tell it's playing in the basement. If I leave the house and re-enter, it's much more obvious that there's something going on in the air around me.

    20hz shakes the water pipes across the house when played at 90+ db's at the listening position.

    So, no, you likely won't hear the sounds with your ears. If you hear anything, it will be the room itself vibrating.

    Too much fun!
     
  4. jeff lam

    jeff lam Screenwriter

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    You won't hear it, but you will feel it if it's loud enough.
     
  5. Marcus Lewis

    Marcus Lewis Stunt Coordinator

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    Ah I see, many thanks ...

    My home is an entirely concrete structure (Island homes are all like that) so I guess unless I have it really cranked I won't feel anything ....

    Thanks a bunch!
     
  6. itai

    itai Stunt Coordinator

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    maybe the dog/cat/fish can hear it?
    [​IMG]
     
  7. Jack Keck

    Jack Keck Second Unit

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    Don't know about the dog/cat/fish, but an elephant or whale should have no problem hearing it.
     

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