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Frequency Transformation/ Compression with Open Fitting

IP.com Disclosure Number: IPCOM000187372D
Published in the IP.com Journal: Volume 9 Issue 9B (2009-09-25)
Included in the Prior Art Database: 2009-Sep-25
Document File: 1 page(s) / 65K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

Persons suffering from a ski slope hearing loss are solely able to hear very low or very high frequencies. That makes it difficult to provide such peoples with hearing instruments because the required amplification in the required frequency areas cannot be reached. To overcome this problem the frequencies of the infrasonic spectrum of the patient will be transformed or compressed to that frequency spectrum, which is audible by the patient. This approach works well for patients who use hearing instrument with closed ear molds. However, people with ski slope hearing loss have normal hearing abilities, for example in the range of low frequency spectrum. Therefore they reject the closed ear mold to be able of directly hear their audible sounds. Another disadvantage is that people with closed ear molds suffer from the occlusion effect. They lead to an inflammation of the ear canal due to dampness and a large build up of cerumen. Other disadvantages of the open ear mold are occurring artifacts caused by interferences of the two signal paths, the original or direct path and the processed path.

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Frequency Transformation/ Compression with Open Fitting

Idea: Dr. Matthias Latzel, DE-Erlangen; Dr. Dirk Junius, DE-Erlangen; Katja Berghorn, DE-Erlangen

Persons suffering from a ski slope hearing loss are solely able to hear very low or very high frequencies. That makes it difficult to provide such peoples with hearing instruments because the required amplification in the required frequency areas cannot be reached. To overcome this problem the frequencies of the infrasonic spectrum of the patient will be transformed or compressed to that frequency spectrum, which is audible by the patient. This approach works well for patients who use hearing instrument with closed ear molds. However, people with ski slope hearing loss have normal hearing abilities, for example in the range of low frequency spectrum. Therefore they reject the closed ear mold to be able of directly hear their audible sounds. Another disadvantage is that people with closed ear molds suffer from the occlusion effect. They lead to an inflammation of the ear canal due to dampness and a large build up of cerumen. Other disadvantages of the open ear mold are occurring artifacts caused by interferences of the two signal paths, the original or direct path and the processed path.

Until now no solution is realized solving the above maintained problems. Currently, the transformation or co...