Subject: Re: standards of speech intelligibilty for the hearing impaired? From: Yoon Yang-soo <yyoon5@xxxxxxxx> Date: Thu, 21 Feb 2008 07:56:58 -0600 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>The following should be added to this list. Allen, J. B. (2005) "Consonant recognition and the articulation index," J. Acoust. Soc. Am., 117(4), p.2212-2223. Yang-soo ---- Original message ---- >Date: Thu, 21 Feb 2008 08:45:08 +0100 >From: Arne Leijon <arne.leijon@xxxxxxxx> >Subject: [AUDITORY] standards of speech intelligibilty for the hearing impaired? >To: AUDITORY@xxxxxxxx > >There have been a long series of attempts to modify the standard SII >procedure ANSI S3.5(1997) >to include some basic aspects of hearing loss in predictions of speech >intelligibility >for practical purposes, for example > >@xxxxxxxx{Pavlovic1986, > Author = {Pavlovic, C.V. and Studebaker, G.A. and Sherbecoe, R.L.}, > Journal = jasa, > Pages = {50-57}, > Title = {An articulation index based procedure for predicting the >speech recognition performance of hearing-impaired individuals}, > Volume = {80}, > Year = {1986}} > >@xxxxxxxx{Ching1998, > Author = {Ching, Teresa Y C and Dillon, Harvey and Byrne, Denis}, > Journal = jasa, > Number = {2}, > Pages = {1128-1140}, > Title = {Speech recognition of hearing-impaired listeners: >predictions from audibility and the limited role of high-frequency >amplification}, > Volume = {103}, > Year = {1998}} > >@xxxxxxxx{Ching2001, > Author = {Ching, Teresa Y C and Dillon, Harvey and Katsch, Richard >and Byrne, Denis}, > Journal = {Ear and Hearing}, > Number = {3}, > Pages = {212-224}, > Title = {Maximising effective audibility in hearing aid fitting}, > Volume = {22}, > Year = {2001}} > >The SII approach itself, and those modifications, are of course all >too simple to give a realistic >model of all the various physiological factors that can reduce speech >intelligibility. >Nevertheless, the amazing thing is that even those very simple models >actually account >astonishingly well for some results of speech tests in noise, e.g. > >@xxxxxxxx{Magnusson1996a, > Author = {Magnusson, L.}, > Journal = {Scandinavian Audiology}, > Number = {4}, > Pages = {215-222}, > Title = {Predicting the speech recognition performance of elderly >individuals with sensorineural hearing impairment}, > Volume = {25}, > Year = {1996}} > >For some special purposes, it may even be more reliable >to use the acoustical prediction than to use a real speech-recognition >test! > >@xxxxxxxx{Magnusson2001, > Author = {Magnusson, Lennart and Karlsson, Mia and Leijon, Arne}, > Journal = {Ear and Hearing}, > Number = {1}, > Pages = {46-57}, > Title = {Predicted and measured speech recognition performance in >noise with linear amplification}, > Volume = {22}, > Year = {2001}} > >Still we are probably far away from any physiologically realistic >standard. > >However, given any (more or less realistic) auditory model, it is >always possible to estimate >the amount of speech information that can be transmitted through the >model, e.g. > >@xxxxxxxx{Stadler2007, > Address = {Antwerpen, BE}, > Author = {Svante Stadler and Arne Leijon and Bj{\"o}rn Hagerman}, > Booktitle = {Interspeech 07}, > Title = {An Information theoretic approach to estimate speech >intelligibility for normal and impaired hearing}, > Year = {2007}} > >This approach is equivalent to testing how well an ideal automatic >speech-recognition system can perform, given the >speech signal output from the auditory model. > >Best wishes, >Arne Leijon Sincerely, Yang-soo Yoon Ph.D. candidate Auditory Perception at Dept. of SHS Human Speech Recognition at Beckman Institute, UIUC phone: 217-766-1367