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 . 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.