An Automatic Design Method for the Acoustic Parameters of Telephone-Handsets Reducing the Effects of Leak by Monte Carlo Method

Yoshinobu KAJIKAWA; Yasuo NOMURA; Juro OHGA

An Automatic Design Method for the Acoustic Parameters of Telephone-Handsets Reducing the Effects of Leak by Monte Carlo Method

Yoshinobu KAJIKAWA, Yasuo NOMURA, Juro OHGA

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When we use a telephone-handset, the frequency response of the telephone-earphone becomes degraded because of the leak through the slit between the ear and the earphone. Consequently, it is very important to establish the design method of the telephone-handset which reduces the effect of leak. No one has tried to design the telephone-handset to reduce the effect. We are the only ones to have proposed an automatic design method by nonlinear optimization techniques. However, this method gives only one set of the acoustic parameters aiming at a certain specific target frequency response, and therefore lacks flexibility in the actual design problem. On the other hand, the design method proposed in this paper, which uses Monte-Carlo method, gives an infinite number of sets of acoustic parameters that realize infinite frequency responses within the target allowable region. As these infinite number of sets become directly the design ranges of acoustic parameters, the proposed method has the flexibility that any set of the acoustic parameters belonging to the design ranges guarantees the corresponding response to be within the target allowable region, and at the same time reduces the effect of leak. This flexibility is advantageous to the actual design problem.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E79-A No.6 pp.825-835

Publication Date: 1996/06/25

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Category: Acoustics

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Yoshinobu KAJIKAWA, Yasuo NOMURA, Juro OHGA, "An Automatic Design Method for the Acoustic Parameters of Telephone-Handsets Reducing the Effects of Leak by Monte Carlo Method" in IEICE TRANSACTIONS on Fundamentals, vol. E79-A, no. 6, pp. 825-835, June 1996, doi: .
Abstract: When we use a telephone-handset, the frequency response of the telephone-earphone becomes degraded because of the leak through the slit between the ear and the earphone. Consequently, it is very important to establish the design method of the telephone-handset which reduces the effect of leak. No one has tried to design the telephone-handset to reduce the effect. We are the only ones to have proposed an automatic design method by nonlinear optimization techniques. However, this method gives only one set of the acoustic parameters aiming at a certain specific target frequency response, and therefore lacks flexibility in the actual design problem. On the other hand, the design method proposed in this paper, which uses Monte-Carlo method, gives an infinite number of sets of acoustic parameters that realize infinite frequency responses within the target allowable region. As these infinite number of sets become directly the design ranges of acoustic parameters, the proposed method has the flexibility that any set of the acoustic parameters belonging to the design ranges guarantees the corresponding response to be within the target allowable region, and at the same time reduces the effect of leak. This flexibility is advantageous to the actual design problem.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/e79-a_6_825/_p

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@ARTICLE{e79-a_6_825,
author={Yoshinobu KAJIKAWA, Yasuo NOMURA, Juro OHGA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={An Automatic Design Method for the Acoustic Parameters of Telephone-Handsets Reducing the Effects of Leak by Monte Carlo Method},
year={1996},
volume={E79-A},
number={6},
pages={825-835},
abstract={When we use a telephone-handset, the frequency response of the telephone-earphone becomes degraded because of the leak through the slit between the ear and the earphone. Consequently, it is very important to establish the design method of the telephone-handset which reduces the effect of leak. No one has tried to design the telephone-handset to reduce the effect. We are the only ones to have proposed an automatic design method by nonlinear optimization techniques. However, this method gives only one set of the acoustic parameters aiming at a certain specific target frequency response, and therefore lacks flexibility in the actual design problem. On the other hand, the design method proposed in this paper, which uses Monte-Carlo method, gives an infinite number of sets of acoustic parameters that realize infinite frequency responses within the target allowable region. As these infinite number of sets become directly the design ranges of acoustic parameters, the proposed method has the flexibility that any set of the acoustic parameters belonging to the design ranges guarantees the corresponding response to be within the target allowable region, and at the same time reduces the effect of leak. This flexibility is advantageous to the actual design problem.},
keywords={},
doi={},
ISSN={},
month={June},}

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TY - JOUR
TI - An Automatic Design Method for the Acoustic Parameters of Telephone-Handsets Reducing the Effects of Leak by Monte Carlo Method
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 825
EP - 835
AU - Yoshinobu KAJIKAWA
AU - Yasuo NOMURA
AU - Juro OHGA
PY - 1996
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E79-A
IS - 6
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - June 1996
AB - When we use a telephone-handset, the frequency response of the telephone-earphone becomes degraded because of the leak through the slit between the ear and the earphone. Consequently, it is very important to establish the design method of the telephone-handset which reduces the effect of leak. No one has tried to design the telephone-handset to reduce the effect. We are the only ones to have proposed an automatic design method by nonlinear optimization techniques. However, this method gives only one set of the acoustic parameters aiming at a certain specific target frequency response, and therefore lacks flexibility in the actual design problem. On the other hand, the design method proposed in this paper, which uses Monte-Carlo method, gives an infinite number of sets of acoustic parameters that realize infinite frequency responses within the target allowable region. As these infinite number of sets become directly the design ranges of acoustic parameters, the proposed method has the flexibility that any set of the acoustic parameters belonging to the design ranges guarantees the corresponding response to be within the target allowable region, and at the same time reduces the effect of leak. This flexibility is advantageous to the actual design problem.
ER -