A Voice and Ear for Telephone Measurements

Inglis, A. H.; Gray, C. H. G.; Jenkins, R. T.

doi:10.1002/j.1538-7305.1932.tb03126.x

Cited by 21 publications

(2 citation statements)

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“…Using a rubber "head," Yamaguchi and Sushi (1965) found no difference between the curves taken with the two sound sources Mott (1934). obtained the same result with an artificial "ear"(Inglis et al, 1932). More recently, Villchur (1969) indicated that this equality might not hold strictly true for real-ear conditions as will be discussed presently.Available tympanum and canal-entrancepressure curves for the open ear, with the subject facing the sound source, are plotted on Figs.…”

supporting

confidence: 58%

Comparable Coupler and Real-Ear Measurements on Supraaural- and Insert-Type Earphones

Bryant¹

1972

The Journal of the Acoustical Society of America

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Tests on supraaural-and insert-type earphones for telephone applications, designed from measurements with real ears and the American National Standards Institute (ANSI) 2-and 6-cm a calibration couplers, are reported. Disagreements between real-ear and coupler data are rationalized by reducing the basic 2-cm a volume to 1.3 cm a and employing an approximate transfer characteristic to relate the supraaural coupler data to a common plane of reference corresponding to the tympanum position. Several experimental couplers for obtaining data within the telephone speech band, which permit measurements on the two types of earphone at the common plane, are described.

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supporting

confidence: 58%

Comparable Coupler and Real-Ear Measurements on Supraaural- and Insert-Type Earphones

Bryant¹

1972

The Journal of the Acoustical Society of America

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“…Первые исследова-ния акустических измерений в наружном слуховом про-ходе (НСП) были опубликованы в начале XX века учены-ми в области телефонии. А. Inglis издал доклад об АИ в наружном слуховом проходе, заслоненном телефонной трубкой [9]. В дальнейшем это исследование было на-правлено на развитие «искусственного уха», воссоздаю-щего акустические характеристики нормального уха более точно, чем простые замкнутые полости.…”

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Acoustic impedancometry: the evolution of diagnostic possibilities

Pal'chun

Levina

Efimova

et al. 2015

Vestn. otorinolaringol.

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Диагностика слуховых нарушений в современной ау-диологии представлена различными методами, позволяю-щими последовательно проводить дифференциальную диагностику уровня поражения слуховой системы [1,2]. Современные психоакустические методы широко ис-пользуются при исследовании состояния слуховой систе-мы больных. Однако эти методы являются субъективны-ми, поскольку исследуемый сам оценивает результат, что не применимо во многих случаях. Так, в вопросах экспер-тизы трудоспособности, при нарушении сознания вслед-ствие различных заболеваний и травм, при исследовании слуха у детей, в случаях недостаточности психического развития исследуемых, а также при проведении диффе-ренциальной диагностики ведущее значение приобретают именно объективные методы исследования слуха [3][4][5]. Благодаря научным достижениям последних лет в области физики и клинической аудиологии, большое распростра-нение в практике получил один из таких объективных ме-тодов исследования слуха, как акустическая импедансо-метрия -измерение акустического импеданса (АИ) коле-бательной системы уха. В настоящее время это исследова-ние занимает важное место в аудиологической диагности-ке, обеспечивая объективную оценку проводящей систе-мы среднего уха и частично проводящего пути слухового анализатора, предоставляя важную информацию для дифференциальной и топической диагностики наруше-ний слуха [2-4, 6, 7]. Тем не менее, учитывая широкое разнообразие патологии системы слуха, остается актуаль- The present review of the literature reports the materials concerning the application of the acoustic impedance measurements of normal ears and pathologically changed organs of hearing that are important for the differential diagnostics and monitoring of the hearing system condition during the conservative and surgical treatment.

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Performance Characteristics of Electrical Hearing Aids for the Deaf

Hartig¹,

Newhart²

1936

Archives of Otolaryngology - Head and Neck Surgery

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There has long existed a need, which has been expressed by otologists and others interested in persons who are hard of hearing, for a disinterested comparison of the performance characteristics of portable commercial carbon microphone hearing aids. In 1934 Dr. Horace Newhart, as chairman of the Committee of Deafness Prevention and Amelioration of the American Academy of Ophthalmology and Otolaryngology, proposed that an investigation be undertaken to determine whether significant differences exist between the hearing aids of various manufacturers. With the help of funds supplied by the Graduate School Research Committee of the University of Minnesota the proposed investigation was commenced in July 1934 as a joint project of the Division of Otolaryngology and of the Electrical Engineering Department.It was the original plan to test the products of the leading and representative manufacturers of portable carbon microphone hearing aids and thereupon to make an attempt to specify easily applied procedures for evaluating their relative worth. Accordingly, seven different stock hearing aid models of the portable carbon microphone type were tested in an extensive preliminary investigation. These tests indicated the nature of the data needed to determine the performance characteristics of the instruments and showed which models were comparable as to amplifying power. A second more extensive series of tests was conducted on the latest product of four of the leading manufacturers. This article is a report on this second series of tests, with an introductory discussion of the general problem.Two general types of hearing aids are in current use, the air conduction type, which is fundamentally similar to the telephone, and the so-called bone conduction type. The first part of the discussion will be confined to the air conduction method of ameliorating deafness.

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A Voice and Ear for Telephone Measurements

Cited by 21 publications

References 0 publications

Comparable Coupler and Real-Ear Measurements on Supraaural- and Insert-Type Earphones

Comparable Coupler and Real-Ear Measurements on Supraaural- and Insert-Type Earphones

Acoustic impedancometry: the evolution of diagnostic possibilities

Performance Characteristics of Electrical Hearing Aids for the Deaf

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