What causes major Narrow Frequency spikes?

Discussion in 'Mastering' started by ptfigg, Oct 29, 2005.

  1. ptfigg

    ptfigg Active Member

    I am reviewing a v/o track I recorded. I have a high-pass/ low-pass filter set on an external parametric eq at 80hz/11000hz. Bandwidth is set to 'shelf'.

    At approx. 2khz, there is an obvious spike when viewing the audio signal with an analyzer plugin. It is inconsistant with the rest of the frequency curve. I think it represents a +6dB increase, and is as thin as a tooth pick visually.

    What is the cause of something like this?


  2. dwoz

    dwoz Guest

    could be aliasing? the filter is ringing.

  3. RemyRAD

    RemyRAD Well-Known Member

    You might actually be looking at second or third harmonic distortion? But a spike? I usually only see one at 15,750 which is, horizontal sync from a television set! It gets into everything, even behind closed doors!
  4. Falken

    Falken Active Member

    using any kind of eq boost can cause that.
  5. RemyRAD

    RemyRAD Well-Known Member

    Actually it sounds like a power supply problem that is inducing your 2kHz spike. Try and other input device. If it continues, it's the input on your sound card or just your sound card.
  6. McCheese

    McCheese Well-Known Member

    It's your tin foil hat.

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