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Re: Cheever's Fundamental Misconception

Mike, how likely is it that Cheever's null condition will one day be enshrined as a universal natural law? Or Hiraga's for that matter? Both authors express doubts about this, so I am not challenging them on this count. The question is, why is their data different? Hiraga uses Wegel and Lane's data that has been "rexamined" by Kuriyagawa and Kameoka. Cheever uses Wegel and Lane's original data. So who is right?

As a tie-breaker, take a look at M. Lazenby's "How Little Distortion Can We Hear?: Effects of Ear Distortion and Masking" (Wireless World, Sep 1957). Lazenby examines masking research post Wegel and Lane. He looks at data from Sivian and White, Fletcher, and a number of other sources. Lazenby's well-supported analysis shows that: "The various results on masking...show a spread of up to about + or - 10dB about their mean."

In light of Lazenby's spread, your theory about even-order masking may explain more than either Cheever's or Hiraga's null condition.



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