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Showing 1 results for Alternative Binaural Loudness Balance
Sayyed Jalal Sameni, Volume 9, Issue 1 (5-2001)
Abstract
Extract
In this study, we tried to put forward some formulas for interpreting Alternate Binaural Loudness Balance (ABLB) test results by using characteristics of ABLB graphs. Last step of loudness balancing (in dB HL) and thresholds of both ears are considered as formulas variables. The procedure includes: At first, resulting values are put in a formula to obtain type of graph slope. If the slope represents different recruitment (complete, partial or hyper recruitment), the second formula (last test step value ratio) will be used to determine recruitment types. It should be mentioned that in determining exact ABLB test results, ± 10 dB variability must be considered as a test error. As a result, mentioned formulas have not been an exception and this error factor was included in computing them. In next step, we tried to reduce test time which may be considered as a dilemma for test by using this method. Therefore, the test includes only the last step of loudness balancing and the mentioned formulas are used to obtain the test results. At last, the results of this method were compared to the graph procedure for determining their effectiveness.
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