The effects of Venting on In-the-Ear, In-the-Canal, and Completely-in-the-Canal Hearing Aid Shell
- 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-ï¿½m 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...