Communication system using short range radio communication headset

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.

1 - 9 . (canceled)  
     
     
         10 . A short range radio communication headset system, comprising: 
 a first headset for short range radio communications;    a second headset for short range radio communications which transmits speeches to the first headset; and    a speech processing device configured to apply a speech processing to the speeches transmitted by the second headset and supply processed signals to the first headset;    wherein the first headset has a receiver, an external sound detection microphone for detecting direct sounds from an external, and a transmitter for transmitting the direct sounds to the speech processing device at a first frequency;    the second headset has a transmitter for transmitting the speeches to the speech processing device at a second frequency; and    the speech processing device receives the direct sounds from the first headset and the speeches from the second headset, selectively adjusts a ratio of the direct sounds and the speeches and transmits adjusted signals to the first headset at a third frequency.    
     
     
         11 . The headset communication system of  claim 10 , wherein the speech processing device has: 
 a first receiving unit for receiving the direct sounds from the first headset;    a second receiving unit for receiving the speeches from the second headset;    an adaptation processing unit for carrying out an adaptation processing using either the direct sounds or the speeches as reference signals;    a correlation processing unit for correlating the reference signals with another one of the direct sounds or the speeches that are not used as the reference signals, and extracting and outputting only necessary components; and    a transmitting unit for transmitting an output of the correlation processing unit at the third frequency.    
     
     
         12 - 14 . (canceled)  
     
     
         15 . 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.