Title:
METHOD FOR SELECTING ONE MICROPHONE OUT OF PLURAL MICROPHONES AND VOICE-ACTUATED SWITCHING SYSTEM
Document Type and Number:
Japanese Patent JP3025194
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To shorten operation processing time required for the selection of a microphone in a teleconference system.
SOLUTION: An operation processing request for a microphone selecting process is fixed, by using a combination value for providing the standard of quality of voice signals respectively received by plural microphones. A microphone, capable of receiving a voice signal by the highest quality, is selected by comparing a signal energy value received by each microphone with signal energy values respectively received by other microphones. Specifically, a pair of microphones for determining a sound source direction are inspected by searching a pair of a microphone turned to the front and having strong sound and a microphone turned to the rear side, connected to the front microphone and having weak sound. A microphone pair having the highest combination value is selected as the microphone pair, capable of most efficiently receiving the voice signal.
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Inventors:
Donald John Bowen
Gregory Shearpita Junior
Gregory Shearpita Junior
Application Number:
JP11232196A
Publication Date:
March 27, 2000
Filing Date:
May 07, 1996
Export Citation:
Assignee:
AT&TIIPM Corporation
International Classes:
H04R3/00; H04M3/56; H04M9/08; H04M9/10; H04R27/00; H04R29/00; (IPC1-7): H04R3/00; H04M3/56; H04M9/00
Domestic Patent References:
| JP60116268A | ||||
| JP61227458A | ||||
| JP59193660A |
Attorney, Agent or Firm:
Hirofumi Mitsumata