A simplified measurement method of TMTF for hearing-impaired listeners

Authors

  • Takashi Morimoto RION Co. Ltd., Tokyo, Japan
  • Takeshi Nakaichi RION Co. Ltd., Tokyo, Japan
  • Kouta Harada RION Co. Ltd., Tokyo, Japan
  • Yasuhide Okamoto Inagi Municipal Hospital, Tokyo, Japan
  • Ayako Kanno Inagi Municipal Hospital, Tokyo, Japan
  • Sho Kanzaki Keio University Hospital, Tokyo, Japan
  • Kaoru Ogawa Keio University Hospital, Tokyo, Japan

Abstract

It is difficult to understand speech for listeners with reduced temporal resolution. To measure the auditory index of temporal resolution in clinical diagnosis, a novel measurement method was proposed. It is called a simplified measurement method of temporal modulation transfer function (S-TMTF). This method is based on measurement of temporal modulation transfer function (TMTF). The novelty of S-TMTF lies in the use of only two thresholds for estimation of peak sensitivity and 3-dB cutoff frequency. One is a threshold of modulation depth and the other is a threshold of modulation frequency. In this study, to evaluate the practicability and accuracy of peak sensitivity and 3-dB cutoff frequency, both S-TMTF and TMTF were measured for normal-hearing and hearing-impaired subjects. Results of S- TMTF were significantly correlated with that of TMTF and the measurement time of S-TMTF could be shortened to one fourth of the time for TMTF. Furthermore, the measurement time will be shortened by using the method of limits. S-TMTF would be applied for clinical diagnosis of hearing impairment.

References

Bacon, S.P., and Viemeister, N.K. (1985). “Temporal modulation transfer functions in normal-hearing and hearing-impaired listeners,” Audiology, 24, 117-134.

Eddins, D.A. (1993). “Amplitude modulation detection of narrow-band noise: Effects of absolute bandwidth and frequency region,” J. Acoust. Soc. Am., 93, 470-479.

Formby, C., and Muir, K. (1988). “Modulation and gap detection for broadband and filtered noise signals,” J. Acoust. Soc. Am., 84, 545-550.

Levitt, H. (1971). “Transformed up-down methods in psychoacoustics,” J. Acoust. Soc. Am., 49, 467-477.

Narne, V.K., and Vanaja, C.S. (2009). “Preception of speech with envelope enhancement in indivduals with auditory neuropathy and simulated loss of temporal modulation processing,” Int. J. Audiol., 48, 700-707.

Penner, M.J. (1977). “Detection of temporal gaps in noise as a measure of the decay of auditory sensation,” J. Acoust. Soc. Am., 61, 552-557.

Shen, Y., and Richards, V.M. (2013). “Temporal modulation transfer function for efficient assessment of auditory temporal resolution,” J. Acoust. Soc. Am., 133, 1031-1041.

Zeng, F.G., Oba, S., Grade, S., Sininger, Y., and Starr, A. (1999). “Temporal and speech processing deficits in auditory neuropathy,” Neuroreport, 10, 3429-3435.

Additional Files

Published

2013-12-15

How to Cite

Morimoto, T., Nakaichi, T., Harada, K., Okamoto, Y., Kanno, A., Kanzaki, S., & Ogawa, K. (2013). A simplified measurement method of TMTF for hearing-impaired listeners. Proceedings of the International Symposium on Auditory and Audiological Research, 4, 349–355. Retrieved from https://proceedings.isaar.eu/index.php/isaarproc/article/view/2013-39

Issue

Vol. 4 (2013): Auditory Plasticity - Listening with the Brain

Section

2013/7. Hearing loss assessment and characterization

License

Authors who publish with this journal agree to the following terms:

a. Authors retain copyright* and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

b. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

c. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).

*From the 2017 issue onward. The Danavox Jubilee Foundation owns the copyright of all articles published in the 1969-2015 issues. However, authors are still allowed to share the work with an acknowledgement of the work's authorship and initial publication in this journal.