Development of a Danish speech intelligibility test

A Danish speech intelligibility test for assessing the speech recognition threshold in noise (SRTN) has been developed. The test consists of 180 sentences distributed in 18 phonetically balanced lists. The sentences are based on an open word-set and represent everyday language. The sentences were equalized with respect to intelligibility to ensure uniform SRTN assessments with all lists. In contrast to several previously developed tests such as the hearing in noise test (HINT) where the equalization is based on scored (objective) measures of word intelligibility, the present test used an equalization method based on subjective assessments of the sentences. The new equalization method is shown to create lists with less variance between the SRTNs than the traditional method. The number of sentence levels included in the SRTN calculation was also evaluated and differs from previous tests. The test was verified with 14 normal-hearing listeners; the overall SRTN lies at a signal-to-noise ratio of −3.15 dB with a standard deviation of 1.0 dB. The list-SRTNs deviate less than 0.5 dB from the overall mean.

[1]  T Houtgast,et al.  Method for the selection of sentence materials for efficient measurement of the speech reception threshold. , 1999, The Journal of the Acoustical Society of America.

[2]  B. Moore,et al.  Psychoacoustic abilities of subjects with unilateral and bilateral cochlear hearing impairments and their relationship to the ability to understand speech. , 1989, Scandinavian audiology. Supplementum.

[3]  G. Fairbanks.  Test of Phonemic Differentiation: The Rhyme Test , 1958 .

[4]  B Kollmeier,et al.  Development and evaluation of a German sentence test for objective and subjective speech intelligibility assessment. , 1997, The Journal of the Acoustical Society of America.

[5]  J M Festen,et al.  Difficulties with speech intelligibility in noise in spite of a normal pure-tone audiogram. , 1990, Audiology : official organ of the International Society of Audiology.

[6]  S. Soli,et al.  Development of the Hearing in Noise Test for the measurement of speech reception thresholds in quiet and in noise. , 1994, The Journal of the Acoustical Society of America.

[7]  L L Elliott,et al.  Development of a test of speech intelligibility in noise using sentence materials with controlled word predictability. , 1977, The Journal of the Acoustical Society of America.

[8]  Sigfrid D Soli,et al.  Assessment of speech intelligibility in noise with the Hearing in Noise Test , 2008, International journal of audiology.

[9]  A. M. Mimpen,et al.  Improving the reliability of testing the speech reception threshold for sentences. , 1979, Audiology : official organ of the International Society of Audiology.

[10]  R Plomp,et al.  Auditory handicap of hearing impairment and the limited benefit of hearing aids. , 1978, The Journal of the Acoustical Society of America.

[11]  A. Boothroyd,et al.  Mathematical treatment of context effects in phoneme and word recognition. , 1988, The Journal of the Acoustical Society of America.

[12]  K. D. Kryter,et al.  ARTICULATION-TESTING METHODS: CONSONANTAL DIFFERENTIATION WITH A CLOSED-RESPONSE SET. , 1965, The Journal of the Acoustical Society of America.

[13]  A. Macleod,et al.  A procedure for measuring auditory and audio-visual speech-reception thresholds for sentences in noise: rationale, evaluation, and recommendations for use. , 1990, British journal of audiology.

[14]  S. Soli,et al.  Adaptation of the HINT (hearing in noise test) for adult Canadian Francophone populations , 2005, International journal of audiology.

[15]  Sigfrid D Soli,et al.  Development of the Cantonese Hearing In Noise Test (CHINT) , 2005, Ear and hearing.

[16]  Birgitta Larsby,et al.  A Swedish version of the Hearing In Noise Test (HINT) for measurement of speech recognition , 2006, International journal of audiology.

[17]  E Arslan,et al.  Effects of different noises on speech discrimination by the elderly. , 1990, Acta oto-laryngologica. Supplementum.

[18]  B Hagerman,et al.  Sentences for testing speech intelligibility in noise. , 1982, Scandinavian audiology.