A digital hearing aid is provided that includes front and rear microphones, a sound processor, and a speaker. Embodiments of the digital hearing aid include an occlusion subsystem, and a directional processor and headroom expander. The front microphone receives a front microphone acoustical signal and...http://www.google.fr/patents/US20030012391?utm_source=gb-gplus-shareBrevet US20030012391 - Digital hearing aid system
Numéro de demande: 10/121,221 Numéro de publication: US 2003/0012391 A1 Date de dépôt: 12 avr. 2002 Brevet délivré: US6937738 ( Date de délivrance 30 août 2005)
