COMMUNICATION SYSTEM USING SHORT RANGE RADIO COMMUNICATION HEADSET

• US 20080247562A1
• Filed: 06/10/2008
• Published: 10/09/2008
• Est. Priority Date: 12/25/2001
• Status: Abandoned Application

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Tanaka, Shinichi, Momosaki, Kohei, Takebayashi, Yoichi, NAGAYASU, Katsuyoshi
• Application Number:
  US12/136,253
• Publication Number:
  US 20080247562A1
• Time in Patent Office: Days
• US Class Current: 381/74
• CPC Class Codes: H04B 1/385 Transceivers carried on the body, e.g. in helmets
• CPC Class Codes: H04B 2001/3866 carried on the head
• CPC Class Codes: H04M 1/05 specially adapted for use on head, throat or breast
• CPC Class Codes: H04M 1/6008 in the transmitter circuit
• CPC Class Codes: H04M 1/6066 including a wireless connection
• CPC Class Codes: H04M 2250/02 including a Bluetooth interface
• CPC Class Codes: H04R 1/1041 Mechanical or electronic switches, or control elements switches in general H01H
• CPC Class Codes: H04R 1/1083 Reduction of ambient noise active noise reduction per se G10K11/175; protective devices for the ear, e.g. providing acoustic protection A61F11/06
• CPC Class Codes: H04R 2201/107 Monophonic and stereophonic headphones with microphone for two-way hands free communication
• CPC Class Codes: H04R 2420/07 Applications of wireless loudspeakers or wireless microphones
• CPC Class Codes: H04R 5/033 Headphones for stereophonic communication details thereof, e.g. relating to batteries, cables or control elements H04R1/10
• CPC Class Codes: H04R 5/0335 Earpiece support, e.g. headbands or neckrests for monophonic headphones H04R1/105

Abstract

In a short range radio communication headset, signals transmitted by the short range radio communications are received while direct sounds propagated from an external are detected. Then, a digital signal adaptation processing using either received signals or the direct sounds as reference signals are applied, and a ratio between the received signals and the direct sounds is controlled by correlating the reference signals and another one of the received signals and the direct sounds that are not used as the reference signals and extracting necessary components.

Claims

1. An acoustic processing method for a short range radio communication headset system, comprising:

receiving direct sounds from an external detected by a first headset as first received signals through short range radio communications;

receiving speeches transmitted by a second headset to the first headset as second received signals through short range radio communications;

applying an adaptation processing using either the first received signals or the second received signals as reference signals;

controlling a ratio of the first received signals and the second received signals by correlating the reference signals and another one of the first received signals and the second received signals that are not used as the reference signals and extracting necessary components; and

transmitting signals with the ratio controlled by the controlling step to the first headset through the short range radio communications.