TY - JOUR
T1 - Two-Point Method for Measuring the Temporal Modulation Transfer Function
AU - Morimoto, Takashi
AU - Irino, Toshio
AU - Harada, Kouta
AU - Nakaichi, Takeshi
AU - Okamoto, Yasuhide
AU - Kanno, Ayako
AU - Kanzaki, Sho
AU - Ogawa, Kaoru
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Numbers JP25280063, JP25462652, and JP16H01734.
Publisher Copyright:
Copyright © 2018 American Auditory Society . Printed in the U.S.A.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Objective: The temporal modulation transfer function (TMTF) has been proposed to estimate the temporal resolution abilities of listeners with normal hearing and listeners with hearing loss. The TMTF data of patients would be useful for clinical diagnosis and for adjusting the hearing instruments at clinical and fitting sites. However, practical application is precluded by the long measurement time of the conventional method, which requires several measurement points. This article presents a new method to measure the TMTF that requires only two measurement points. Design: Experiments were performed to estimate the TMTF of normal listeners and listeners with hearing loss to demonstrate that the two-point method can estimate the TMTF parameter and the conventional method. Sixteen normal hearing and 21 subjects with hearing loss participated, and the difference between the estimated TMTF parameters and measurement time were compared. Results: The TMTF parameters (the peak sensitivity L ps and cutoff frequency f cutoff ) estimated by the conventional and two-point methods showed significantly high correlations: the correlation coefficient for L ps was 0.91 (t(45) = 14.3; p < 10 -10 ) and that for f cutoff was 0.89 (t(45) = 13.2; p < 10 -10 ). There were no fixed and proportional biases. Therefore, the estimated values were in good agreement. Moreover, there was no systematic bias depending on the subject's profile. The measurement time of the two-point method was approximately 10 min, which is approximately one-third that of the conventional method. Conclusion: The two-point method enables the introduction of TMTF measurement in clinical diagnosis.
AB - Objective: The temporal modulation transfer function (TMTF) has been proposed to estimate the temporal resolution abilities of listeners with normal hearing and listeners with hearing loss. The TMTF data of patients would be useful for clinical diagnosis and for adjusting the hearing instruments at clinical and fitting sites. However, practical application is precluded by the long measurement time of the conventional method, which requires several measurement points. This article presents a new method to measure the TMTF that requires only two measurement points. Design: Experiments were performed to estimate the TMTF of normal listeners and listeners with hearing loss to demonstrate that the two-point method can estimate the TMTF parameter and the conventional method. Sixteen normal hearing and 21 subjects with hearing loss participated, and the difference between the estimated TMTF parameters and measurement time were compared. Results: The TMTF parameters (the peak sensitivity L ps and cutoff frequency f cutoff ) estimated by the conventional and two-point methods showed significantly high correlations: the correlation coefficient for L ps was 0.91 (t(45) = 14.3; p < 10 -10 ) and that for f cutoff was 0.89 (t(45) = 13.2; p < 10 -10 ). There were no fixed and proportional biases. Therefore, the estimated values were in good agreement. Moreover, there was no systematic bias depending on the subject's profile. The measurement time of the two-point method was approximately 10 min, which is approximately one-third that of the conventional method. Conclusion: The two-point method enables the introduction of TMTF measurement in clinical diagnosis.
KW - Hearing impaired
KW - Temporal modulation transfer function
KW - Temporal resolution
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U2 - 10.1097/AUD.0000000000000590
DO - 10.1097/AUD.0000000000000590
M3 - Article
C2 - 29664752
AN - SCOPUS:85059163550
VL - 40
SP - 55
EP - 62
JO - Journal of the American Audiology Society
JF - Journal of the American Audiology Society
SN - 0196-0202
IS - 1
ER -