A Model-Based Placement Strategy for a Nearby External Microphone for Speech Enhancement in Hearing Aids
Konferenz: Speech Communication - 12. ITG-Fachtagung Sprachkommunikation
05.10.2016 - 07.10.2016 in Paderborn, Deutschland
Tagungsband: Speech Communication
Seiten: 5Sprache: EnglischTyp: PDF
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Autoren:
Yee, Dianna (Sivantos GmbH, Henri-Dunant-Str. 100, 91058 Erlangen, Germany & Institute of Communication Acoustics, Ruhr-Universität Bochum, 44780 Bochum, Germany)
Kamkar-Parsi, Homayoun; Puder, Henning (Sivantos GmbH, Henri-Dunant-Str. 100, 91058 Erlangen, Germany)
Martin, Rainer (Institute of Communication Acoustics, Ruhr-Universität Bochum, 44780 Bochum, Germany)
Inhalt:
A theoretical acoustic model of the human torso is proposed in this paper. The human torso is approximated with an infinitely long rigid cylinder and the scattering due to an incident plane wave is modeled. The derivation of the acoustic model is first discussed, along with its limitations. The theoretical scattering patterns are compared to empirical measurements. A placement strategy using the acoustic model is also proposed for nearby hearing aid microphone accessories such that the external microphone maximally benefits from the body shielding noise from the back hemisphere.