Communication device and telephone communication method thereof

Abstract

The present invention relates to a communication device and a telephone communication method thereof. The present invention includes two or more microphones mounted at different positioned in a predetermined space, e.g., in a vehicle. Further, a detector compares selectively the signal-to-noise ratios, sound quality states, volume intensities or the like of signals input through the microphones, and detects the most optimal signal as a telephone communication signal in the signals. Echo and / or howling contained in the input signal when one talks over the telephone with a communication counterpart is removed through an echo remover in accordance with the control operation of a controller. Furthermore, if signals are input to the others of the microphones while the telephone communication is performed, the telephone communication is continuously performed by comparing the input signals with the signal input to the microphone through which the telephone communication has been performed and selecting a microphone with the most optimal telephone communication signal. Accordingly, there is an advantage in that occupants except a driver can conveniently talk over the telephone using any one of two or more microphones installed in a vehicle, and the telephone communication can be performed with an optimal telephone communication signal although a talker is changed.

Description

technical field [0001] The present invention relates to a communication device and a telephone communication method thereof, in which two or more microphones are installed in a predetermined space and any one of signals input from the microphones is selected to perform telephone communication. Background technique [0002] A hands-free device or a remote terminal device is installed inside a vehicle to enable easy telephone communication during driving. In addition, in addition to the microphone used to install the main body of the hands-free device or the remote terminal device, the microphone is also installed on the dashboard, the steering wheel, the roof above the driver's seat, etc., so that the driver's voice can be transmitted well to the corresponding communication party. In addition, such devices cause the voice of the communication counterpart to be output through the audio system of the vehicle. [0003] Drivers can use this telephone communication device to tal...

AI Technical Summary

Problems solved by technology

However, in the case where a passenger sitting on the passenger seat or the rear seat records his or her voice, the voice signal cannot be accurately transmitted to the microphone installed in the remote terminal device, so that good recording cannot be performed.

Images