计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2014年
4期
215-218,235
,共5页
孙文业%陶智%孙宝印%倪赛华%王振明%顾济华
孫文業%陶智%孫寶印%倪賽華%王振明%顧濟華
손문업%도지%손보인%예새화%왕진명%고제화
电子耳蜗%神经发放%听觉外周模型
電子耳蝸%神經髮放%聽覺外週模型
전자이와%신경발방%은각외주모형
cochlear implant%nerve firing%peripheral auditory model
提出了一种改进的CIS电子耳蜗的脉冲刺激方案。利用听觉外周模型产生一种符合听神经发放机制的刺激脉冲序列来刺激电极,代替传统的均匀交替刺激方案,不仅可以通过包络而且可以通过脉冲间隔来传递语音信息,确保了语音的空间编码和时间编码。听觉仿真实验表明,相对于其他两种方案,方案可以有效地传递更多更丰富的语音信息,在汉语声调识别实验中至少提高19.2%识别率,在可懂度的对比实验中具有最高可懂度。
提齣瞭一種改進的CIS電子耳蝸的脈遲刺激方案。利用聽覺外週模型產生一種符閤聽神經髮放機製的刺激脈遲序列來刺激電極,代替傳統的均勻交替刺激方案,不僅可以通過包絡而且可以通過脈遲間隔來傳遞語音信息,確保瞭語音的空間編碼和時間編碼。聽覺倣真實驗錶明,相對于其他兩種方案,方案可以有效地傳遞更多更豐富的語音信息,在漢語聲調識彆實驗中至少提高19.2%識彆率,在可懂度的對比實驗中具有最高可懂度。
제출료일충개진적CIS전자이와적맥충자격방안。이용은각외주모형산생일충부합은신경발방궤제적자격맥충서렬래자격전겁,대체전통적균균교체자격방안,불부가이통과포락이차가이통과맥충간격래전체어음신식,학보료어음적공간편마화시간편마。은각방진실험표명,상대우기타량충방안,방안가이유효지전체경다경봉부적어음신식,재한어성조식별실험중지소제고19.2%식별솔,재가동도적대비실험중구유최고가동도。
A stimulation strategy for cochlear implant is proposed. The proposed strategy applies the stochastic firing characteristic of peripheral auditory nerve to generate the impulse train stimulating the corresponding electrode, instead of traditional uniform alternating stimulating strategy. Therefore, speech information can be conveyed not only by the envelope but also impulse intervals by the proposed strategy, which ensure both the space principle and time principle. Auditory simulation experiments show that the proposed strategy can efficiently convey more speech information when comparing with the other strategies. The proposed strategy improves the recognition rate at least 19.2% at the Chinese tone recogni-tion experiment, and has the highest intelligibility at the intelligibility contrast experiment.