Human Ear and flat response

Discussion in 'Speakers & Subwoofers' started by Abhinandan, Dec 9, 2003.

  1. Abhinandan

    Abhinandan Stunt Coordinator

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    What is a "true" flat response? From the figure it is obvious that human ear responds differently to different frequencies at different output levels. It leads to the fact that the lower frequencies "need" to be EQd using BFD or alike.


    [​IMG]



    I have Ascend Acoustics CBM-170 which is popular for their flat frequeny response above 74Hz.
    Do the recording engineers take into account the human ear response and compensate for it?

    Read this article for more info on how the human ear responds to the audio frequencies:
    http://www.silcom.com/~aludwig/EARS.htm
     
  2. VinhT

    VinhT Second Unit

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  3. Michael R Price

    Michael R Price Screenwriter

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    Well, don't we hear real music through that volume dependent "ear EQ" curve too? I think this is why music sounds more realistic at higher levels. I don't think the ear can be fooled easily into thinking sound is as loud as the original event (with 'loudness' controls or something).
     
  4. Abhinandan

    Abhinandan Stunt Coordinator

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    Then should the sub be EQd for a flatter response or should it have a "house curve" with a slope of around 15db from 32Hz to 100hz? I am planning to get BFD to EQ my VTF-2 sub.
     
  5. Wayne A. Pflughaupt

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    Abhinandan,

    This subject was pretty well beat to death here a few months ago. You might want to have a tall beverage and a few twinkies on hand before you start reading. [​IMG]

    If you intend to go with a house curve, you'll never be happy with the results if you pick an arbitrary value for the slope. Check here and here for more information.

    Regards,
    Wayne A. Pflughaupt
     
  6. Zack_R

    Zack_R Stunt Coordinator

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  7. Wayne A. Pflughaupt

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  8. David Judah

    David Judah Screenwriter

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  9. Chu Gai

    Chu Gai Lead Actor

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    I guess that's what you get when recording engineers record onto CD like they were recording onto vinyl.
     

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