A Functional View on the Peripheral Human Hearing Organ

2005 ◽  
pp. 47-74 ◽  
Author(s):  
Herbert Hudde
Keyword(s):  
Hearing Organ ◽  
Human Hearing

Mechanical Aspects in Human Hearing

2005 ◽  
Author(s):  
Albrecht Eiber ◽  
Christian Breuninger
Keyword(s):  
Clinical Practice ◽  
Finite Elements ◽  
Multibody Systems ◽  
Nonlinear Models ◽  
Dynamical Behavior ◽  
Model Parameters ◽  
Clinical Test ◽  
Loud Sound ◽  
Hearing Organ ◽  
Human Hearing

For the description of the hearing process nonlinear models for normal, pathological and reconstructed ears were established based on multibody systems or finite elements. Nonlinearities are found in the constitutive equations of the ear drum, the ligaments and the coupling between implant and ossicles. Measurements in the clinical practice and in the lab are used to determine the dynamical behavior of the hearing organ and to derive the belonging model parameters. Simulations with various types of implants and different manners of incisions show the big influence of the points of attachment and the coupling conditions on the sound transfer. For actively driven implants the restricted coupling forces have to be regarded since distortion may lead to unacceptable results. The models allow virtual tests of passive and active implants to optimize their performance, to shorten clinical test series and an interpretation of injuries due to loud sound events.

Power Amplification and Selectivity in the Cochlear Amplifier

2013 ◽  
Vol 38 (1) ◽  
pp. 83-92 ◽  
Author(s):  
Piotr Kiełczyński
Keyword(s):  
Analytical Formula ◽  
Parametric Amplifier ◽  
Fine Tuning ◽  
Physiological Data ◽  
Actual Structure ◽  
New Model ◽  
Power Amplification ◽  
Proposed Model ◽  
Hearing Organ ◽  
Human Hearing

Abstract This paper presents a new model that describes the physical phenomena occurring in an individual Outer Hair Cell (OHC) in the human hearing organ (Cochlea). The new model employs the concept of parametric amplification and piezoelectricity. As a consequence, the proposed model may explain in a natural way many as yet unresolved problems about the mechanisms of: 1) power amplification, 2) non- linearity, 3) fine tuning, or 4) high sensitivity that take place in the human hearing organ. Mathematical analysis of the model is performed. The equivalent electrical circuits of an individual OHC are established. The high selectivity of the OHC parametric amplifier is analyzed by solving the resulting Mathieu and Ince differential equations. An analytical formula for the power gain in the OHC’s parametric amplifier has been developed. The proposed model has direct physical interpretation and all its elements have their physical counterparts in the actual structure of the cochlea. The numerical values of the individual elements of the electrical equivalent circuits are consistent with the experimental physiological data. It is anticipated that the proposed new model may contribute in future improvements of human cochlear implants as well as in development of new digital audio standards.

Development of Piezoelectric Artificial Cochlea Inspired by Human Hearing Organ

2015 ◽  
pp. 145-152 ◽  
Author(s):  
Young Jung ◽  
Jun-Hyuk Kwak ◽  
Hanmi Kang ◽  
Wandoo Kim ◽  
Shin Hur
Keyword(s):  
Hearing Organ ◽  
Human Hearing

Review of Forty Germinal Papers in Human Hearing.

1970 ◽  
Vol 15 (7) ◽  
pp. 475-476
Author(s):  
BERTRAM SCHARF
Keyword(s):  
Human Hearing

The tuned displacement response of the hearing organ is generated by the outer hair cells

Neuroscience ◽  
1992 ◽  
Vol 49 (3) ◽  
pp. 607-616 ◽  
Author(s):  
L. Brundin ◽  
Å. Flock ◽  
S.M. Khanna ◽  
M. Ulfendahl
Keyword(s):  
Hair Cells ◽  
Outer Hair Cells ◽  
Displacement Response ◽  
Hearing Organ

scholarly journals Multichannel acoustic source and image dataset for the cocktail party effect in hearing aid and implant users

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Tim Fischer ◽  
Marco Caversaccio ◽  
Wilhelm Wimmer
Keyword(s):  
Hearing Aids ◽  
Scientific Community ◽  
Cocktail Party ◽  
Acoustic Source ◽  
Image Dataset ◽  
Cocktail Party Effect ◽  
Spatial Coordinates ◽  
Acoustic Chamber ◽  
Human Hearing ◽  
Human Sense

AbstractThe Cocktail Party Effect refers to the ability of the human sense of hearing to extract a specific target sound source from a mixture of background noises in complex acoustic scenarios. The ease with which normal hearing people perform this challenging task is in stark contrast to the difficulties that hearing-impaired subjects face in these situations. To help patients with hearing aids and implants, scientists are trying to imitate this ability of human hearing, with modest success so far. To support the scientific community in its efforts, we provide the Bern Cocktail Party (BCP) dataset consisting of 55938 Cocktail Party scenarios recorded from 20 people and a head and torso simulator wearing cochlear implant audio processors. The data were collected in an acoustic chamber with 16 synchronized microphones placed at purposeful positions on the participants’ heads. In addition to the multi-channel audio source and image recordings, the spatial coordinates of the microphone positions were digitized for each participant. Python scripts were provided to facilitate data processing.

Morquio’s Disease and the Hearing Organ

ORL ◽  
1977 ◽  
Vol 39 (4) ◽  
pp. 233-240 ◽  
Author(s):  
George Kelemen
Keyword(s):  
Hearing Organ
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