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MeSH Review

Speech Intelligibility

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Disease relevance of Speech Intelligibility


High impact information on Speech Intelligibility

  • Speech intelligibility in quiet and CCITT noise from the side (+/-90 degrees ) was assessed using the German HSM sentence test and was significantly better when using bilateral CI in comparison with either unilateral CI, mainly due to a head shadow effect [5].
  • CONCLUSIONS: Test results demonstrate speech-to-noise ratio has a significant effect on speech intelligibility of the CAT items under all conditions [6].
  • RESULTS: Improvement in function including speech intelligibility was seen following the intrathecal baclofen trial [7].
  • These corrected noise levels were then used to calculate an Articulation Index using the Speech Intelligibility Index (SII, ) [8].
  • In Experiment 2 the hearing-impaired subjects showed a significant preference for the hearing aid setting with a long release time (4 sec) and a low compression threshold (20 dB SPL), both with regard to sound quality and speech intelligibility [9].

Biological context of Speech Intelligibility


Associations of Speech Intelligibility with chemical compounds


Gene context of Speech Intelligibility

  • CONCLUSION: In pediatric cochlear implantees, GJB2-related deafness is a predictor of good speech intelligibility [15].
  • The effect on speech intelligibility of sensorineural hearing-impaired listeners of two principal-component compression system implementations, compression of PC1 and compression of both PC1 and PC2, was compared to that of linear amplification (LA), independent compression of multiple bands (MBC), and wideband compression (WC) [16].
  • Speech intelligibility was measured in quiet at three sound levels (50, 65, and 80 dB SPL), and speech reception thresholds (SRTs) in 12-talker babble were measured under monaurally and binaurally aided conditions, with the speech and babble both coincident and spatially separated [17].
  • This study also indicated that measuring speech intelligibility at MCL approximated PB max (+/- 12 percent) only about two-third of the time [18].
  • Open-set monosyllabic CNC word perception in quiet and Speech Intelligibility Test sentence perception in noise was evaluated at the end of each of the time intervals [19].

Analytical, diagnostic and therapeutic context of Speech Intelligibility


  1. Spectral feature enhancement for people with sensorineural hearing impairment: effects on speech intelligibility and quality. Stone, M.A., Moore, B.C. Journal of rehabilitation research and development. (1992) [Pubmed]
  2. Pediatric central auditory dysfunction. Comparison of children with confirmed lesions versus suspected processing disorders. Jerger, S., Johnson, K., Loiselle, L. The American journal of otology. (1988) [Pubmed]
  3. Cochlear implantation in children deafened by cytomegalovirus: speech perception and speech intelligibility outcomes. Ramirez Inscoe, J.M., Nikolopoulos, T.P. Otol. Neurotol. (2004) [Pubmed]
  4. Dysarthria and dysphagia as long-term sequelae in a child treated for posterior fossa tumour. Cornwell, P.L., Murdoch, B.E., Ward, E.C., Morgan, A. Pediatric rehabilitation. (2003) [Pubmed]
  5. Minimum audible angle, just noticeable interaural differences and speech intelligibility with bilateral cochlear implants using clinical speech processors. Senn, P., Kompis, M., Vischer, M., Haeusler, R. Audiol. Neurootol. (2005) [Pubmed]
  6. Callsign Acquisition Test (CAT): speech intelligibility in noise. Rao, M.D., Letowski, T. Ear and hearing. (2006) [Pubmed]
  7. Intrathecal baclofen therapy improves functional intelligibility of speech in cerebral palsy. Leary, S.M., Gilpin, P., Lockley, L., Rodriguez, L., Jarrett, L., Stevenson, V.L. Clinical rehabilitation. (2006) [Pubmed]
  8. Application of frequency importance functions to directivity for prediction of benefit in uniform fields. Ricketts, T.A., Henry, P.P., Hornsby, B.W. Ear and hearing. (2005) [Pubmed]
  9. Effects of multi-channel compression time constants on subjectively perceived sound quality and speech intelligibility. Hansen, M. Ear and hearing. (2002) [Pubmed]
  10. Paired comparisons between the Classic 300 bone-anchored and conventional bone-conduction hearing aids in terms of sound quality and speech intelligibility. Ringdahl, A., Israelsson, B., Caprin, L. British journal of audiology. (1995) [Pubmed]
  11. Effect of bilateral subthalamic nucleus stimulation and dopatherapy on oral control in Parkinson's disease. Gentil, M., Tournier, C.L., Pollak, P., Benabid, A.L. Eur. Neurol. (1999) [Pubmed]
  12. The effects of levodopa on tongue strength and endurance in patients with Parkinson's disease. De Letter, M., Santens, P., Van Borsel, J. Acta neurologica Belgica. (2003) [Pubmed]
  13. Use of speech production repair strategies to improve diver communication. Mendel, L.L., Walton, J.H., Hamill, B.W., Pelton, J.D. Undersea & hyperbaric medicine : journal of the Undersea and Hyperbaric Medical Society, Inc. (2003) [Pubmed]
  14. Pediatric speech intelligibility test. II. Effect of receptive language age and chronological age. Jerger, S., Jerger, J., Lewis, S. Int. J. Pediatr. Otorhinolaryngol. (1981) [Pubmed]
  15. Connexin 26 (GJB2) gene-related deafness and speech intelligibility after cochlear implantation. Sinnathuray, A.R., Toner, J.G., Clarke-Lyttle, J., Geddis, A., Patterson, C.C., Hughes, A.E. Otol. Neurotol. (2004) [Pubmed]
  16. Principal-component amplitude compression for the hearing impaired. Bustamante, D.K., Braida, L.D. The Journal of the Acoustical Society of America. (1987) [Pubmed]
  17. Evaluation of a dual-channel full dynamic range compression system for people with sensorineural hearing loss. Moore, B.C., Johnson, J.S., Clark, T.M., Pluvinage, V. Ear and hearing. (1992) [Pubmed]
  18. Relationships among speech threshold, loudness discomfort, comfortable loudness, and PB max in the elderly hearing impaired. Beattie, R.C., Warren, V.G. The American journal of otology. (1982) [Pubmed]
  19. Conversion from the SPEAK to the ACE strategy in children using the nucleus 24 cochlear implant system: speech perception and speech production outcomes. Psarros, C.E., Plant, K.L., Lee, K., Decker, J.A., Whitford, L.A., Cowan, R.S. Ear and hearing. (2002) [Pubmed]
  20. Comparison of three hearing aid fittings using the Speech Intelligibility Rating (SIR) Test. Surr, R.K., Fabry, D.A. Ear and hearing. (1991) [Pubmed]
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