双侧人工耳蜗仿真声中时间差灵敏度的改善
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- 英文论文题名：Improved sensitivity of interaural time-difference in vocoder simulations of bilateral cochlear implants
- 论文作者：方义 ; 孟庆林 ; 冯海泓
- 英文论文作者：FANG Yi ; MENG Qing-lin ; FENG Hai-hong ; Shanghai Acoustics Laboratory ; Chinese Academy of Sciences ; Acoustic Lab. ; School of Physics and Optoelectronics ; South China University of Technology
- 年：2016
- 作者机构：中国科学院声学研究所东海研究站;华南理工大学物理与光电学院声学研究所;
- 论文关键词：人工耳蜗 ; 双耳时间差 ; 时域精细结构 ; 空间听觉
- 英文论文关键词：cochlear implant ; interaural time difference ; temporal fine structure ; spatial hearing
- 会议召开时间：2016-10-28
- 会议录名称：2016年全国声学学术会议论文集
- 语种：中文
- 分类号：R764.5
- 学会代码：OGSM
- 会议名称：2016年全国声学学术会议
- 会议地点：中国湖北武汉
- 主办单位：中国声学学会
- 学会名称：中国声学学会
- 页数：4
- 文件大小：462k
- 原文格式：D
- 会议级别：全国
摘要
双侧人工耳蜗(Cochlear Implant,CI)植入者的空间听觉感知能力较差,部分原因是现有商用编码策略中时域精细结构的丢失,导致双耳时间差(Interaural Time Difference,ITD)没有被很好表达。近期有人提出了一种名为时域限制编码(Temporal Limits Encoder,TLE)的策略。TLE用移频操作引入了慢变的时域精细结构。本文在理论上分析了TLE在ITD感知方面的优势。随后开展了双侧CI仿真声实验,对比了TLE和传统的连续间隔采样策略。其中测试项目为纯音(100、300、500、700、900Hz和1100Hz)的最小可分辨ITD测试,被试为6名听力正常的青年人。测试结果表明,对于双侧CI仿真声,TLE提高了100-700Hz频率范围内的ITD灵敏度。
Bilateral cochlear implant(CI) users still do not perform well in spatial hearing perception. The absence of temporal fine structure in existing commercial strategies make interaural time difference(ITD), which is an essential cue for spatial hearing, unavailable to them. A new strategy known as the temporal limits encoder(TLE) has been proposed recently. The TLE uses a frequency down-shifting operation to introduce a slow-varying temporal fine structure. This paper theoretically analyzes the potential advantages of TLE in ITD perception. An experiment using vocoder simulation was conducted to compare the performance of TLE and CIS on ITD sensitivity. The experiment tested the minimum resolvable ITD of some vocoded pure tones(100, 300, 500, 700, 900, and 1100 Hz). Six normal hearing adults were recruited. Results showed that the TLE improved pure tone ITD sensitivity in the frequency range between 100-700 Hz for sine-wave vocoder simulation in normal hearing listeners..
Bilateral cochlear implant(CI) users still do not perform well in spatial hearing perception. The absence of temporal fine structure in existing commercial strategies make interaural time difference(ITD), which is an essential cue for spatial hearing, unavailable to them. A new strategy known as the temporal limits encoder(TLE) has been proposed recently. The TLE uses a frequency down-shifting operation to introduce a slow-varying temporal fine structure. This paper theoretically analyzes the potential advantages of TLE in ITD perception. An experiment using vocoder simulation was conducted to compare the performance of TLE and CIS on ITD sensitivity. The experiment tested the minimum resolvable ITD of some vocoded pure tones(100, 300, 500, 700, 900, and 1100 Hz). Six normal hearing adults were recruited. Results showed that the TLE improved pure tone ITD sensitivity in the frequency range between 100-700 Hz for sine-wave vocoder simulation in normal hearing listeners..
引文
[1]van Hoesel R J,Tyler R S.Speech perception.localization,and lateralization with bilateral cochlear implants.[J].Journal of the Acoustical Society of America,2003,113(3):1617-30.
[2]Laske R D,Veraguth D,Dillier N,et al.Subjective and objective results after bilateral cochlear implantation in adults.[J].Otology&Neurotology,2009,30(3):313-318.
[3]Litovsky R Y,Parkinson A,Arcaroli J.Spatial hearing and speech intelligibility in bilateral cochlear implant users.[J].Ear&Hearing,2009,30(4):419-31.
[4]Gantz B J,Tyler R S,Rubinstein J T,et al.Binaural cochlear implants placed during the same operation.[J].Otology&Neurotology,2002,23(2):169-180.
[5]Buss E,Pillsbury H C,Buchman C A,et al.Multicenter U.S.bilateral MED-EL cochlear implantation study:speech perception over the first year of use.[J].Ear&Hearing,2008,29(1):20-32.
[6]Grantham D.W.Spatial hearing and related phenomena.Hearing,1995:297-345.
[7]Gardner,W.Rice's representation for cyclostationary processes[J].IEEE transactions on communications.1987,35(1):74-78
[8]Wilson B S,Finley C C,Lawson D T,et al.Better speech recognition with cochlear implants[J].Nature,1991,352(6332):236-8.
[9]Hoesel R V.Bilateral Cochlear Implants[M].Auditory Prostheses,2011:48-49
[10]Laback B,Egger K,Majdak P.Perception and coding of interaural time differences with bilateral cochlear implants[J].Hearing Research,2015,322(1):138-150.
[11]Van Hoesel R J M.A peak-derived timing stimulation strategy for a multi-channel cochlear implant:WO WO/2002/096153[P],2002.
[12]Van Hoesel R J,Tyler R S.Speech perception,localization,and lateralization with bilateral cochlear implants.[J].Journal of the Acoustical Society of America,2003,113(3):1617-30.
[13]Hochmair I,Nopp P,Jolly C,et al.MED-EL Cochlear implants:state of the art and a glimpse into the future.[J].Trends in Amplification,2006,10(4):201-19.
[14]Meng Q,Zheng N,Li X.Mandarin speech-in-noise and tone recognition using vocoder simulations of the temporal limits encoder for cochlear implants[J].Journal of the Acoustical Society of America,2016,139(1):301-310.
[15]Meng Q,Zheng N,Li X.A temporal limits encoder for cochlear implants[C].IEEE International Conference on Acoustics,Speech and Signal Processing.IEEE,2015.
[16]Noel V A,Eddington D K.Sensitivity of bilateral cochlear implant users to fine-structure and envelope interaural time differencesa)[J].Journal of the Acoustical Society of America,2013,133(4):2314-28.
[2]Laske R D,Veraguth D,Dillier N,et al.Subjective and objective results after bilateral cochlear implantation in adults.[J].Otology&Neurotology,2009,30(3):313-318.
[3]Litovsky R Y,Parkinson A,Arcaroli J.Spatial hearing and speech intelligibility in bilateral cochlear implant users.[J].Ear&Hearing,2009,30(4):419-31.
[4]Gantz B J,Tyler R S,Rubinstein J T,et al.Binaural cochlear implants placed during the same operation.[J].Otology&Neurotology,2002,23(2):169-180.
[5]Buss E,Pillsbury H C,Buchman C A,et al.Multicenter U.S.bilateral MED-EL cochlear implantation study:speech perception over the first year of use.[J].Ear&Hearing,2008,29(1):20-32.
[6]Grantham D.W.Spatial hearing and related phenomena.Hearing,1995:297-345.
[7]Gardner,W.Rice's representation for cyclostationary processes[J].IEEE transactions on communications.1987,35(1):74-78
[8]Wilson B S,Finley C C,Lawson D T,et al.Better speech recognition with cochlear implants[J].Nature,1991,352(6332):236-8.
[9]Hoesel R V.Bilateral Cochlear Implants[M].Auditory Prostheses,2011:48-49
[10]Laback B,Egger K,Majdak P.Perception and coding of interaural time differences with bilateral cochlear implants[J].Hearing Research,2015,322(1):138-150.
[11]Van Hoesel R J M.A peak-derived timing stimulation strategy for a multi-channel cochlear implant:WO WO/2002/096153[P],2002.
[12]Van Hoesel R J,Tyler R S.Speech perception,localization,and lateralization with bilateral cochlear implants.[J].Journal of the Acoustical Society of America,2003,113(3):1617-30.
[13]Hochmair I,Nopp P,Jolly C,et al.MED-EL Cochlear implants:state of the art and a glimpse into the future.[J].Trends in Amplification,2006,10(4):201-19.
[14]Meng Q,Zheng N,Li X.Mandarin speech-in-noise and tone recognition using vocoder simulations of the temporal limits encoder for cochlear implants[J].Journal of the Acoustical Society of America,2016,139(1):301-310.
[15]Meng Q,Zheng N,Li X.A temporal limits encoder for cochlear implants[C].IEEE International Conference on Acoustics,Speech and Signal Processing.IEEE,2015.
[16]Noel V A,Eddington D K.Sensitivity of bilateral cochlear implant users to fine-structure and envelope interaural time differencesa)[J].Journal of the Acoustical Society of America,2013,133(4):2314-28.