Posted by Bill Fitzmaurice [ 70.109.154.69 ] on March 03, 2005 at 21:13:27:

In Reply to: Re: going way out on a limb here... posted by footstony on March 03, 2005 at 20:03:56:

You won't get a stable reading with pink noise. The best way to use it is to take a few readings and average them. You also won't get the same dB reading with pink noise as you will with swept sine, as with pink noise the power is spread across the spectrum while with swept sine power is all concentrated at one frequency at any one point in time. To derive SPL using pink noise you have to reference a single frequency within the plot to a reference SPL measured with sine at a single frequency. For a full range speaker 1kHz is the usual frequency of choice.

Replies:

• Re: going way out on a limb here... - JLapaire 06:57:06 03/07/05 (3)
  • Re: going way out on a limb here... - Wayne Parham 22:11:05 03/07/05 (2)
    • Reference distance - JLapaire 06:59:32 03/08/05 (1)
      • Re: Reference distance - bill fitzmaurice 14:12:23 03/08/05 (0)