Ullrich Sigwanz
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Publication
Featured researches published by Ullrich Sigwanz.
Journal of the Acoustical Society of America | 1993
Wolfram Meyer; Eduard Kaiser; Ullrich Sigwanz; Soeren Dipl.-Ing. Larsen
Digitally programmable, single-channel and multi-channel hearing aids of various manufacturers and/or hearing aids having different acoustic characteristics can be set and adjusted with the programming device of the invention. The programming device includes a microcontroller, main memories, interchangeable company program modules with plug-in locations, and a master program module with corresponding plug location. A display is also provided for the programming device.
Journal of the Acoustical Society of America | 2003
Ullrich Sigwanz; Fred Zoels
A digital hearing aid with a variable directional microphone characteristic, has a signal processing unit, an earphone and at least two microphones, with a sigma-delta converter as well as a delay element following immediately thereafter in at least one microphone signal path. In a method for the operation of such a digital hearing aid, an A/D conversion with the sigma-delta converter ensues in the signal path of at least one microphone and the resulting 1-bit signal is delayed.
Archive | 1997
Fred Zoels; Ullrich Sigwanz; Inga Holube; Raimund Martin
Archive | 1998
Wolfram Meyer; Ullrich Sigwanz; Hans-Joachim Weiss
Archive | 1997
Ullrich Sigwanz; Fred Zoels
Archive | 1998
Joerg Bindner; Eduard Kaiser; Ullrich Sigwanz; Roland Weidner
Archive | 1998
Joerg Bindner; Ullrich Sigwanz
Archive | 2003
Ullrich Sigwanz
Archive | 1989
Wolfram Meyer; Eduard Kaiser; Ullrich Sigwanz; Soeren Dipl.-Ing. Larsen
Journal of the Acoustical Society of America | 1997
Ullrich Sigwanz; Fred Zoels
