Best way to measure room response with laptop and SPL meter?

Discussion in 'Archived Threads 2001-2004' started by Jason Price, Feb 9, 2002.

  1. Jason Price

    Jason Price Second Unit

    Joined:
    Sep 16, 1998
    Messages:
    265
    Likes Received:
    0
    I've got a laptop and an RS SPL meter and I want to measure the frequency response of my 20-39CS+ in my room. I seem to recall reading of people connecting their SPL meters to computers and using some software to get an accurate representation of their rooms. I also need to download a test-tone cd for this. So, I need to know how to connect the SPL meter to my laptop, what software to use (free, if possible), and where to download a test-tone cd. Can anyone help me out?
     
  2. Rick Radford

    Rick Radford Supporting Actor

    Joined:
    May 12, 2001
    Messages:
    642
    Likes Received:
    0
    Jason, if you have a full duplex sound card in your laptop, you'll benefit from using ETF5. I think you can also use a half-duplex card and get the MLS tones from ETF and burn a CD too. You can get a free demo that works. You just can't save/print files nor take more than 2 measurements without restarting the program.
    Regular test tones will not work with ETF. The have to be MLS signals. (maximum length sequence)
    Read about it here:
    http://www.etfacoustic.com/
    Check out these help sites: the first if you plan to use ETF and both if you plan to get a BFD1124p.
    http://www27.brinkster.com/jmag999/
    http://www.troycable.net/~snap/bfdinfo.htm
    HTH.
     

Share This Page