Voice channel for vehicle-mounted communication control unit and voice communication method

Abstract

The invention discloses a voice channel for a vehicle-mounted communication control unit and a voice communication method. The voice channel comprises a microcontroller, a global system for mobile communications (GSM) / general packet radio service (GPRS) module, a frequency modulation (FM) transmitting chip integrated on a vehicle-mounted communication control unit, and the data transmission and voice communication between a vehicle-mounted terminal and a service station are realized. By processing the voice from a microphone or the service station through the microcontroller, the echo and background noise are effectively suppressed, and the communication quality is improved. The voice from the microphone is processed by the microcontroller and is transmitted to the service station through the GSM / GPRS module; an audio signal transmitted from the service station is transmitted to the microcontroller for processing through the GSM / GPRS module and is transmitted to the FM chip to be transmitted to a vehicle-mounted radio for playing; therefore, the communication between personnel in the vehicle and workers at the service station is realized. The invention can realize data transmission between vehicle-mounted equipment and the vehicle-mounted communication control unit, guarantees the communication quality of the voice channel, has high voice quality and low power consumption, and is convenient to mount and low in cost.

Description

technical field [0001] The invention belongs to the communication field and relates to a voice channel and a voice communication method of a vehicle-mounted communication control unit. Background technique [0002] With the rapid development of computer technology and communication technology, in order to meet people's increasing demand for vehicle functions and enhance the ability to solve unexpected accidents, more and more information systems are equipped on vehicles. Among them, the remote voice call function has become the focus of research. How to ensure the data transmission of the vehicle communication control unit and at the same time realize the high-quality voice call function is the key technology of the vehicle information system. Existing remote call functions include vehicle-mounted hands-free telephones realized by Bluetooth and other technologies, but they only realize wireless functions, and the quality of calls cannot be guaranteed, the function is single,...

AI Technical Summary

Problems solved by technology

Existing remote call functions include vehicle-mounted hands-free telephones realized by Bluetooth and other technologies, but they only realize wireless functions, and the quality of calls cannot be guaranteed, the function is single, and the transmission of data from other devices in the vehicle and the service station cannot be realized.

[0003] When the user sends his voice command to the receiver, due to the noisy environment in the car, the audio signal will inevitably be mixed with various noise signals, resulting in the server being unable to obtain accurate and high-quality audio signals

Images