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October 2021

Binaural speech recognition and the Stenger effect

Author(s): Turner, C. W.

Journal/Book: J Speech Lang Hear Res. 2000; 43: 10801 Rockville Pike, Rockville, MD 20852-3279, USA. Amer Speech-Language-Hearing Assoc. 926-933.

Abstract: The present investigation examined the effects of systematically altering the balance between speech presentation levels to the 2 ears of 12 listeners with bilateral asymmetrical sensorineural hearing impairments. Speech-recognition scores for /VCV/ speech stimuli were obtained from each participant in quiet for 9 conditions ranging from monaural poorer ear only to monaural better ear only, with 7 intermediate conditions in which the sound balance between ears was varied in 5-dB steps. High-pass spectral shaping was provided to the poorer ear, and unshaped amplification was provided to the better ear. The results suggested that as a group, varying the sound level in the better ear within -20 to +10 dB of the centered position did not significantly change the speech recognition For these participants. No evidence of binaural interference was obtained. Findings also showed that in binaural listening situations, the Stenger effect has little influence upon speech-recognition scores. Even when the listeners were unaware of speech being presented to the better ear, their speech-recognition score reflected the better ear's abilities.

Note: Article Turner CW, Univ Iowa, Dept Speech Pathol & Audiol, 1212 SHC, Iowa City,IA 52242 USA

Keyword(s): asymmetrical; binaural; binaural interference; speech recognition; Stenger effect; DISCRIMINATION

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