| US 7,525,440 B2 | ||
| Person monitoring | ||
| Ricardo F. Carreras, Southborough, Mass. (US); Glenn Gomes-Casseres, Framingham, Mass. (US); Marc Hertzberg, Sudbury, Mass. (US); Daniel D. Najemy, Grafton, Mass. (US); and Ray Wakeland, Marlborough, Mass. (US) | ||
| Assigned to Bose Corporation, Framingham, Mass. (US) | ||
| Filed on Jun. 01, 2005, as Appl. No. 11/142,749. | ||
| Prior Publication US 2006/0273914 A1, Dec. 07, 2006 | ||
| Int. Cl. G08B 23/00 (2006.01); G08B 25/08 (2006.01); H04R 29/00 (2006.01); G10K 11/00 (2006.01); G08B 3/02 (2006.01) | ||
| U.S. Cl. 340—573.1 [340/692; 381/57; 181/18; 181/19; 181/139] | 44 Claims |
| 1. A person monitoring system comprising:
a monitored unit comprising a microphone for transducing radiated sound waves and sound waves emanating from the person to
a received audio signal and circuitry for removing from the received audio signal a portion of the received audio signal corresponding
to the radiated sound waves to provide a first processed received audio signal corresponding to the sound waves emanating
from the person, the monitored unit further comprising:
an audio signal source for providing a source audio signal; and
a loudspeaker for transducing the source audio signal to provide the radiated sound waves.
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