![]() Listeners also showed an average of 2 dB of squelch, but only when the target speech was masked by interfering talkers of the same sex as the target.ĬIs provide listeners with unilateral deafness important benefits for speech perception in complex spatial environments, including a larger head-shadow benefit when speech and noise originate on opposite sides of the head, and an improved ability to perceptually organize an auditory scene with multiple competing voices.The views expressed in this abstract are those of the authors and do not reflect the official policy of the Department of Army/Navy/Air Force, Department of Defense, or US Government. On average, the largest head-shadow benefit (5 dB) occurred when the target and masking noise were presented on opposite sides of the head. This can leave you struggling to follow conversations at work, or always having to turn. Hearing loss in just one earknown as unilateral hearing loss or single-sided deafnessis surprisingly common. A second set of conditions examined binaural squelch, with target speech presented from the front and interfering talkers symmetrically placed on both sides. Do you have significant hearing loss in one ear Does it feel like you can’t tell where sounds are coming from. One set of conditions examined head-shadow effects with target speech and masking noise presented from azimuths of 0 or ☑08 degrees. Previous studies that have measured the speech perception of unilaterally deaf individuals after CI but with nonindividualized frequency-to-electrode allocations may therefore have underestimated the potential benefits of providing binaural hearing. Listeners were tested with the acoustic ear only and bilaterally with the CI turned on. Six listeners had single-sided deafness (normal or near-normal audiometric thresholds in the acoustic ear) and five had asymmetric hearing loss (hearing loss in the acoustic ear treated with a hearing aid). The goal of the investigation was to determine whether CI listeners with normal hearing or moderate hearing loss in the contralateral ear would receive a larger head-shadow benefit for target speech and noise originating from opposite sides of the head, and whether listeners would experience binaural squelch in the free field in a test involving interfering talkers.Įleven CI listeners performed a speech-identification task in the presence of interfering noise or speech. But these benefits are modest and in most cases are limited to head-shadow advantages, with little evidence of binaural squelch. ![]() Cochlear implants (CIs) can improve speech-in-noise performance for listeners with unilateral sensorineural deafness.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |