Room response - pink noise, white noise or individual tones

Discussion in 'Archived Threads 2001-2004' started by Stephen Dodds, Feb 24, 2001.

  1. Stephen Dodds

    Stephen Dodds Second Unit

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    Just wondering what the best method of testing room response. Pink noise, white noise or individual test tomes or sweeps.
    I'll be using the Spectraplus or ETF programs.
    Thanks in advance.
    Steve
     
  2. Greg Monfort

    Greg Monfort Supporting Actor

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    Think Pink. [​IMG] If you want to find individual room mode peaks/nulls, then frequency sweeps.
    GM
    ------------------
    Loud is beautiful, if it's clean
     
  3. BruceD

    BruceD Screenwriter

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    Stephen,
    ETF generates it's own signal from the PC for an impulse response measurement that is used to generate a frequency response graph after FFT analysis.
    You don't need a source, just a PC with a stereo sound card capable of full duplex operation. I first tried a RS SPL meter as the microphone and pre-amp.
    Because I wanted a more accurate picture of my speaker room interaction, I ended up buying the parts and building a calibrated microphone and battery operated pre-amp ($100) to use with ETF.
    I'm still learning to manipulate the program's capabilities, and discover more about my room acoustics.
    Interested to hear what you find out.
    Bruce
     

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