Vehicle-carried hands-free telephone device based on microphone array

Abstract

The invention relates to a vehicle-carrying hands-free telephone device based on microphone array, which comprises: a microphone with four microphone arrays connected to mobile phone by a vehicle-carrying speech processing system contained a receive amplification and send unit with one end connected to the microphone and another end connected to the speech output unit, a speech purification processor connected to a JTAG interface, two memories, and speech output unit; a SRAM and FLASH memory, a time-sequence allocation and control unit connected to the receive amplification and send unit, two memories, speech purification processor and power unit; a power unit, and a speech output unit with another end connected to mobile phone. This invention can connect to common mobile phone and form high-quality vehicle-carrying speech communication system.

Description

technical field [0001] The invention relates to a vehicle-mounted hands-free telephone device, in particular to a vehicle-mounted hands-free telephone device based on a microphone array Background technique [0002] According to investigations and studies, it is shown that the concentration of an unimportant call will drop by 30% when driving, and the attention will drop by more than 70% when answering an important call, which will greatly increase the probability of traffic accidents. Therefore, the new traffic law It has been regarded as illegal to use a cell phone while driving, so the hands-free phone in the car has increasingly attracted the attention of car owners. However, most of the current vehicle-mounted hands-free products only provide hands-free functions and wired or wireless access methods, but there are many defects in call quality. For example, drivers who use vehicle-mounted hands-free devices are usually blocked Headaches from the noise of cars running, t...

AI Technical Summary

Problems solved by technology

However, most of the current vehicle-mounted hands-free products only provide hands-free functions and wired or wireless access methods, but there are many defects in call quality. For example, drivers who use vehicle-mounted hands-free devices are usually blocked Headaches from car noise, loudspeaker echoes, and other people's voices

Images