助听器动态范围控制线性化的策略和效果

张戌宝;

1:瑞士Sonova助听器集团加拿大分部Unitron研发部

摘要

<正>设计压缩助听器的核心目标是要确保助听器对实际生活中的各种声音都有可听性。语音是由精确定时的、复杂的音素成份构成,而任何音频放大器都存在这些成份失真的风险。这种失真可以不是谐波失真,因此不能用常见的测试仪表测量出来。宽动态范围压缩(wide dynamic range compression,WDRC)至今仍在广泛地使用中([1]),WDRC通过非线性处理实现了对听音环境中各类声音的可听性,

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张戌宝;

参考文献

1 Theodore HV.著.张戌宝,田岚,译.实用助听器原理和技术[M].第二版.北京:人民军医出版社,2013.82,188~196,200~201.

2 Hornsby BWY,Ricketts TA.The effects of compression ratio,signal-to-noise ratio,and level on speech recognition in normal-hearing listeners[J].J Acoust Soc Am,2001,109:2964.

3 Cox RM,Xu J.Short and long compression release times:speech understanding,real-world preferences,and association with cognitive ability[J].J Am Acad Audiol,2010,21:121.

4 Arehart KH,Kates JM,Anderson MC.Effects of noise,nonlinear processing,and linear filtering on perceived music quality[J].Intern.Journal of Audiology,2011,50:177.

5 Blamey PJ,Martin LFA.Loudness and satisfaction ratings for hearing aid users[J].J AmAcad Audiol,2009,20:272.

6 Schum DJ,Sockalingam R.A new approach to nonlinear signal processing[J].Hearing Review,2010,17:24.

7 Sockalingam R,Halmberg M.Improve speech understanding and reduced listening effort[M].Oticon White paper,Smarum,Denmark,2010.1~3.

8 Blamey PJ.Adaptive dynamic range optimization(ADRO):a digital amplification strategyfor hearing aids and cochlear implants[J].Trends Amplif,2005,9:77.

9 Nilsson MJ,Behrens T.How audiology has guided the development of Oticon's latest release-Oticon Alta[M].Oticon White paper,Askim,Sweden,2013.1~8.

10 Agnew J,Thornton JM.Just noticeable and objectionable group delays in digital hearing aids[J].J Am Acad Audiol,2000,11:330.

11 Hansen M.Effects of multi-channel compression time constants on subjectively perceived sound quality and speech intelligibility[J].Ear Hear,2002,23:369.

12 Palmer CV,Mueller HG,Moriarty M.Profiles of aided loudness:A validation procedure[J].The Hearing J,1999,52:34.

13 Simonsen CS,Behrens T.A new compression strategy based on a guided level estimator[J].Hearing Review,2009,16:26.

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