@Neville or anyone else…
Two separate quotes from experts. Which one is right?
A 10-decibel improvement is really a tripling in the ability to hear a tone at that particular pitch,” said Frequency Chief Development Officer Carl LeBel, Ph.D.
An improvement of 10 decibels at 8000 hertz is also almost a negligible gain, adds University of Iowa’s Gantz, “within test, retest variability of an audiogram,” he says.