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

A microphone array and hands-free phone technology, applied in two-way sound reinforcement telephone system, sub-office voice amplifier, etc., to achieve high cost and performance, easy market promotion, and low overall cost

Inactive Publication Date: 2006-06-21
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 c

Method used

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

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0036] A preferred embodiment of the present invention is described in detail as follows in conjunction with accompanying drawing:

[0037] see figure 1 , the vehicle-mounted hands-free telephone device based on the microphone array, comprising a microphone 1 connected to a mobile phone 8 through a vehicle-mounted voice system, and then connected to a loudspeaker 10 through an incoming call voice receiving amplifying unit 9, characterized in that the microphone 1 is composed of four microphone arrays; the vehicle-mounted The voice processing system is composed of answering amplifier and sound sending unit 2, voice purification processor 3, SRAM memory 6 and FLASH memory 12, timing distribution and control unit 13, power supply unit 11 and voice output unit 4; its connection mode: answering amplifier and One end of sound sending unit 2 is connected with microphone 1, and the other end is connected with speech purification processor 3, and speech purification processor 3 is conn...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): H04M1/60H04M9/08
Inventor 方勇王舒翀张明兴周欢袁吉祥
Owner SHANGHAI UNIV
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