TITLE

The effects of Venting on In-the-Ear, In-the-Canal, and Completely-in-the-Canal Hearing Aid Shell

AUTHOR(S)
Stuart, Andrew; Allen, Rose; Downs, C. Renée; Carpenter, Michael
PUB. DATE
August 1999
SOURCE
Journal of Speech, Language & Hearing Research;Aug1999, Vol. 42 Issue 4, p804
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The acoustic effects of 1 -, 2-, and 3-mm vents were investigated with in-the-ear, in-the-canal, and completely-in-the-canal hearing aid shells. Real-ear sound pressure level measures were obtained from unvented and vented shells with 1 2 adults. In general, with increasing vent size, a statistically significant (p < .05) increase in the amount of low-frequency reduction, an upward shift in vent cutoff frequencies, and an upward shift in vent-associated resonances occurred for all hearing aid shell styles. There was no significant change in the slope of the low-frequency reduction across all hearing aid shell styles (p > .05), albeit the frequency response curves were shifted upward in frequency with increasing vent diameters. Only with the in-the-ear and completely-in-the-canal hearing aid shells were statistically significant (p < .05) differences found with the magnitude of vent-associated resonance as a function of vent diameter, and these differences were not consistent across the different styles. These findings suggest that venting may be used effectively to tune low-frequency responses in custom in-the-ear hearing instruments.
ACCESSION #
2130744

 

Related Articles

  • Achieving prescribed gain/frequency responses with advances in hearing aid technology. Sammeth, Carol A.; Preves, David A. // Journal of Rehabilitation Research & Development;1993, Vol. 30 Issue 1, p1 

    Suggests that technological innovations has improved the capability of older generation in-the-ear (ITE) hearing aids to match prescribed real ear gain/frequency responses. Comparison of the real ear insertion gain (REIG) achieved to the target REIG, using aids having different receivers and...

  • Field Trial Evaluations of a Switched Directional/Omnidirectional In-the-Ear Hearing Instrument. Preves, David A.; Sammeth, Carol A.; Wynne, Michael K. // Journal of the American Academy of Audiology;May1999, Vol. 10 Issue 5 

    The use of directional microphones is one of the few methods available for hearing aids to increase the signal-to-noise ratio. The smaller microphones available with today's technology have increased the viability of their application for in-the-ear (ITE) hearing aids. This study evaluated an...

  • Peaks in the frequency response of hearing aids: Evaluation of the effects on speech... van Buuren, Ronald A.; Festen, Joost M. // Journal of Speech & Hearing Research;Apr96, Vol. 39 Issue 2, p239 

    Evaluates the effects of irregular frequency response of hearing aid on speech intelligibility and sound quality. Examination of previous literature on the effect of irregular frequency response; Effect of irregular frequency response of hearing aids on listeners with impaired and normal...

  • Hearing Protection: Hearing Aids.  // Noise & Vibration in Industry;Oct2008, Vol. 23 Issue 1, p43 

    The article discusses two research on hearing protection. It references studies by Gitte Keidser et al and Huajiang Hang et al published in the 2008 issues of "International Journal of Audiology" and "Mechanical Systems & Signal Processing." In the first study, new hearing-aid users with greater...

  • Revelations of frequency response. Johnson, Jack L. // Motion System Hydraulics & Pneumatics;Nov2003, Vol. 56 Issue 11, p26 

    Reports on the revelations of frequency response in the U.S. Significance of frequent response; Research regarding the topic;Usability of the response.

  • Frequency response of an InGaAsP vapor phase regrown buried heterostructure laser with 18 GHz bandwidth. Olshansky, R.; Lanzisera, V.; Su, C. B.; Powazinik, W.; Lauer, R. B. // Applied Physics Letters;7/21/1986, Vol. 49 Issue 3, p128 

    The frequency response of a 1.3-μm InGaAsP vapor phase regrown buried heterostructure laser with an 18-GHz cw bandwidth is analyzed in detail. The intrinsic bandwidth of the device is shown to be 22 GHz and the 3-dB RC roll-off frequency due to electrical parasitics is found to be 10 GHz.

  • Theoretical modeling of carrier and lattice heating effects for frequency chirping in... Chin-Yi Tsai; Chih-Hsiung Chen; Tien-Li Sung; Chin-Yao Tsai; Rorison, Judy M. // Applied Physics Letters;2/15/1999, Vol. 74 Issue 7, p917 

    Describes a model capable of simultaneously simulating the frequency response of the photon density, carrier density, electron temperature, hole temperature, populations of nonequilibrium longitudinal optical and transverse optical phonons at various wave vectors. Demonstration of the role of...

  • Demystifying frequency response--part 2. Johnson, Jack L. // Hydraulics & Pneumatics (1996);Sep96, Vol. 49 Issue 9, p18 

    Part II. Describes the use of open-loop configuration in determining frequency response characteristics. Determination of the system's behavior with sinusoidal inputs; Criterion for servo-loop stability; Characteristics of frequency response which cause instability.

  • Time-frequency analysis of broadband dispersive waves using the wavelet transform. Wooh, Shi-Chang; Veroy, Karen // AIP Conference Proceedings;2000, Vol. 509 Issue 1, p831 

    We explore the use of the Morlet wavelet transform in the time-frequency analysis of dispersive waves. The Morlet wavelet transform is a windowed Fourier transform wherein the window size varies with frequency. This allows for more effective analysis of the time-frequency characteristics of...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics