Re: Gaussian vs. uniform noise audibility (Bob Masta )


Subject: Re: Gaussian vs. uniform noise audibility
From:    Bob Masta  <masta(at)UMICH.EDU>
Date:    Mon, 2 Feb 2004 10:10:41 -0500

Dear List: I hereby retract my claims of 26 Jan 2004 regarding the audibility of Gaussian noise at low standard deviations. As Dr. Nelkin has kindly (and patiently!) pointed out to me off-list, the SD can have no possible effect other than an apparent loudness change. My observation of a qualitative difference at SD = 0.1 was due to a faulty algorithm. I should like to stress that the discrepancy was due to the low-SD tails not tapering off properly. Please do not rely upon DaqGen at SD much below 1.0 until I have corrected the algorithm and notified the list. My main finding is unchanged: There was no qualitative difference between a uniform distribution and a Gaussian distribution. Sorry of any confusion this has caused, and a hearty thanks to Dr. Nelkin for his astuteness and his perseverance in resolving this. Robert Masta dqatech(at)daqarta.com D A Q A R T A Data AcQuisition And Real-Time Analysis Shareware from Interstellar Research www.daqarta.com


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