Re: BMLD questions

[Ben Hornsby <ben.hornsby@xxxxxxxxxxxxxx>]

You might check out:

Weston, P. B., & Miller, J. D. (1965). Use of Noise to Eliminate One Ear
from Masking Experiments. Journal of the Acoustical Society of America,
37(4), 638-646.

To evaluate the possibility that one ear can be eliminated from a masking
experiment by use of noise, certain relevant facts were determined. These
are: (1) if a tonal signal mixed with noise is received at one ear, the
addition of a noise to the other ear slightly reduces the threshold for the
tone if the noises are statistically independent; (2) in contrast, the noise
added to the nonsignal ear distinctly reduces the threshold for the tone if
the noises are perfectly correlated (+1.0); (3) these effects, (1) and (2)
above, are observed whether the level of the masking noise at the ear that
receives the tonal signal is less than, equal to, or greater than the level
of the added noise at the ear that does not receive the tone; (4) if
identical tones are presented to the two ears and if the signal-to-noise
ratio is about 25 dB lower in one ear than in the other, the effect of the
signal at the ear with the lower signal to noise ratio is eliminated from
the masking experiment. C1965 Acoustical Society of America 

 

Ben


________________________________

	From: AUDITORY Research in Auditory Perception
[mailto:AUDITORY@xxxxxxxxxxxxxxx] On Behalf Of Xuejing Sun
	Sent: Friday, September 09, 2005 10:44 AM
	To: AUDITORY@xxxxxxxxxxxxxxx
	Subject: BMLD questions
	
	
	Hello,
	I have a question regarding binaural masking level difference
(BMLD). For NoSm condition, are there any studies that show the effect of
varying noise level at the ear with signal? That is, keeping noise level on
one side constant and varying the noise level on the other side (the signal
side).
	Thanks,
	Xuejing