Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate
2006-07-13
2009-08-18
Williams, Hezron (Department: 2856)
Measuring and testing
Vibration
By mechanical waves
C181S135000, C381S060000, C381S058000
Reexamination Certificate
active
07574917
ABSTRACT:
There is provided a method for measuring in-situ the acoustic attenuation obtained by a hearing protection device worn by a user, comprising: positioning the hearing protection device comprising a microphone oriented towards the user's ear canal at the user's ear;positioning a cup-like measuring device comprising a loudspeaker oriented towards to user's ear and a microphone oriented towards to user's ear at the user's ear in such a manner that a closed space surrounding the hearing protection device is created by the measuring device;providing a test signal via the loudspeaker, capturing audio signals representative of the level of the test signal in the closed space by the microphone of the measuring device and capturing audio signals representative of the level of the test signal in the user's ear canal by the microphone of the hearing protection device; processing the audio signals captured by the microphone of the measuring device and the audio signals captured by the microphone of the hearing protection device and estimating the attenuation provided by the hearing protection device from the processed audio signals.
REFERENCES:
patent: 3729598 (1973-04-01), Tegt et al.
patent: 3968334 (1976-07-01), Padilla
patent: 4060701 (1977-11-01), Epley
patent: 5577511 (1996-11-01), Killion
patent: 6533062 (2003-03-01), Widmer et al.
patent: 6567524 (2003-05-01), Svean et al.
patent: 6687377 (2004-02-01), Voix et al.
patent: 6766878 (2004-07-01), Widmer et al.
patent: 2004/0086138 (2004-05-01), Kuth
patent: 2005/0123146 (2005-06-01), Voix et al.
patent: 2006/0137934 (2006-06-01), Kurth
patent: 2007/0147635 (2007-06-01), Dijkstra et al.
patent: 10117705 (2001-10-01), None
patent: 1674059 (2006-06-01), None
patent: 2261950 (1993-06-01), None
patent: 2005/055656 (2005-06-01), None
Harsch Samuel
Von Dach Thomas
Fayyaz Nashmiya S
Phonak AG
Roberts Mlotkowski Safran & Cole P.C.
Safran David S.
Williams Hezron
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