Frequency characteristics and speech recognition in cartilage conduction
| Autor: | Tadashi Kitahara, Ryota Shimokura, Hiroshi Hosoi, Toshiaki Yamanaka, Osamu Saito, Tadashi Nishimura, Ryosuke Miyamae |
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| Rok vydání: | 2019 |
| Předmět: |
Adult
Male Hearing aid medicine.medical_treatment Speech recognition Hearing Loss Conductive Congenital Abnormalities 03 medical and health sciences Hearing Aids 0302 clinical medicine otorhinolaryngologic diseases medicine Humans Aural atresia 030223 otorhinolaryngology Confusion Air conduction business.industry Cartilage Ear Signal Processing Computer-Assisted General Medicine medicine.anatomical_structure Otorhinolaryngology 030220 oncology & carcinogenesis Speech Perception Female Surgery medicine.symptom High-pass filter business |
| Zdroj: | Auris Nasus Larynx. 46:709-715 |
| ISSN: | 0385-8146 |
| DOI: | 10.1016/j.anl.2019.01.002 |
| Popis: | Objective Cartilage conduction (CC) is a new transduction form, and hearing devices that utilize CC present a new option for patients with aural atresia. However, in occluded ears, low-tone sounds are transmitted very effectively, resulting in excessive low-tone sound emphasis and speech recognition reduction. This study aimed to clarify low-tone speech recognition for CC in occluded ears, and determine if excessive low-tone sound emphasis decreases maximum speech recognition scores. Methods Eight volunteers with normal hearing participated. The performance-intensity function and maximum speech recognition scores for CC with an earplug (i.e., occluded) and air conduction (AC) were measured under high- and low-pass filter (HPF and LPF) conditions, respectively. Results An HPF improved the maximum speech recognition scores for CC in occluded ears. The scores for CC (occluded) under the conditions of the first- and second-order HPF did not differ from that for AC under the no-filter condition. Conversely, an LPF reduced the scores for AC. The scores and confusion matrices under the second-order LPF condition were similar to those for CC (occluded). Conclusion The conditions under the second-order LPF resembled those of CC in occluded ears. An HPF can compensate excessive low-tone emphasis and improve speech recognition. |
| Databáze: | OpenAIRE |
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