符合普通话语境的宽动态范围压缩算法低频释放时间研究

金凤; 顾向阳; 孙晋; 陈友元

doi:10.13201/j.issn.1001-1781.2017.19.004

符合普通话语境的宽动态范围压缩算法低频释放时间研究

- 1 上海市徐汇区中心医院耳鼻咽喉科复旦大学附属中山医院徐汇医院(上海, 200031);
- 2 中国科学院声学研究所东海研究站
基金项目:
上海市卫生和计划生育委员会青年科研项目 (No:2013-154)

详细信息

通讯作者: 顾向阳, E-mail:gxy12341@163.com

中图分类号: R764

收稿日期: 2017-07-19

Study of low frequency release time in WDRC on hearing-impaired individual in mandarin language environment

- 1 Department of Otorhinolaryngology, Shanghai Xuhui Central Hospital, Zhongshan Hospital Xuhui Hospital, Shanghai, 200031, China;
- 2 Shanghai Acoustics Laboratory, Chinese Academy of Sciences

More Information

Corresponding author: GU Xiangyang, E-mail: gxy12341@163.com

Received Date: 19 July 2017

摘要

摘要: 目的: 探讨在普通话语境下WDRC(宽动态范围压缩算法)低频释放时间对助听器佩戴者言语识别率的影响。方法: 将低频释放时间设置为50、100、200、400、800 ms五个组,分别在3种掩蔽噪声下进行实验,共形成15组实验条件。以听力障碍者作为实验对象,以普通话言语仿真声作为测试音,通过仿真平台输出,在特定的噪声条件下测试言语识别率。结果: WDRC低频释放时间设置为400 ms时,听障者言语识别率最佳;Babble Noise(多说话人噪声)对听力障碍者的噪声下言语识别率有显著影响。结论: 在普通话语境下低频区间时间常数与噪声类型都会影响听力障碍者的普通话言语识别率。
- 宽动态范围压缩算法 /
- 普通话 /
- 释放时间 /
- 言语识别率 /
- 噪声
Abstract: Objective: To investigate the influence of low frequency release time of WDRC(wide dynamic range compression)to speech recognition score (SRS) of deaf subjects with hearing aids in mandarin language environment.Method: Release time constants are set differently from the values of 50 ms, 100 ms, 200 ms, 400 ms and 800 ms in low frequency (LF) channel, with 3 kinds of shaped noise, combining a certain LF release time constant with a certain shaped noise forms 15 different groups of experimental conditions. The testing material is mandarin sentences which are the outputs of simulation in the 15 different release time combinations.Result: If the release time is set the value of 400 ms, the patients with hearing aids can get the best mandarin speech intelligibility; the type of babble noise have significant effects on mandarin SRS.Conclusion: Statistical analysis of test results shows that the release time in LF channel or the type of shaped noise trends to influence mandarin SRS.
- wide dynamic range compression /
- mandarin /
- release time /
- speech recognition score /
- noise

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参考文献(10)

[1]	XI X, CHING T Y, JI F, et al.Development of a corpus of Mandarin sentences in babble with homogeneity optimized viapsychometric evaluation[J].Int J Audiol, 2012, 51:399-404.
[2]	KEIDSER G, DILLON H, FLAX M, et al.The NAL-NL2 Prescription Procedure[J].Audiol Res, 2011, 23:e24.
[3]	赵建平, 原猛, 冯海泓.WDRC释放时间对普通话言语理解度的影响研究[J].声学技术, 2013, 32 (3):217-221.
[4]	MOORE B C.The choice of compression speed in hearing AIDS:theoretical and practical considerations and the role of individual differences[J].Trends Amplif, 2008, 12:103-112.
[5]	ALEXANDER J M, MASTERSON K.Effects of WDRC release time and number of channels on output SNR and speech recognition[J].Ear Hear, 2015, 36:e35-e49.
[6]	NEUMAN A C, BAKKE M H, MACKERSIE C, et al.The effect of compression ratio and release time on the categorical rating of sound quality[J].J Acoust Soc Am, 1998, 103 (5 Pt 1):2273-2281.
[7]	NOVICK M L, BENTLER R A, DITTBERNER A, et al.Effects of release time and directionality on unilateral and bilateral hearing aid fittings in complex sound fields[J].J Am Acad Audiol, 2001, 12:534-544.
[8]	VAN TOOR T, VERSCHUURE H.Effects of highfrequency emphasis and compression time constants on speech intelligibility in noise[J].Int J Audiol, 2002, 41:379-394.
[9]	LUO X, FU Q J.Enhancing Chinese tone recognition by manipulating amplitude envelope:implications for cochlear implants[J].J Acoust Soc Am, 2004, 116:3659-3667.
[10]	亓贝尔, 刘鹏, 古鑫, 等.轻中度感音神经性聋患者汉语普通话声调知觉模式研究[J].临床耳鼻咽喉头颈外科杂志, 2017, 31 (1):38-40.