A Transceiver for Two-way Voice Signal Simultaneous Interpretation

A voice signal, transceiver technology, applied in transmission systems, electrical components, etc., can solve problems such as complex circuits and unstable operation, and achieve the effect of enhancing error correction capabilities and saving frequency band resources

Active Publication Date: 2021-07-23
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Traditional FM transceivers, such as FM radios, can only transmit one voice signal, and have disadvantages such as complex circuits, unstable operation, and volume

Method used

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  • A Transceiver for Two-way Voice Signal Simultaneous Interpretation
  • A Transceiver for Two-way Voice Signal Simultaneous Interpretation
  • A Transceiver for Two-way Voice Signal Simultaneous Interpretation

Examples

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0020] figure 1 Shown in is the circuit block diagram of the transmitter part of the present invention. The microphone ① generates a voice signal with a frequency of 300Hz-3.4KHz and transmits it to the signal intelligent control module ① for digital up-conversion to realize the up-conversion of the voice signal to 7KHz to generate a signal with a frequency of 7.3KHz-10.4KHz. The signal intelligently controls Module ① can choose the development board integrated with FPGA chip. The microphone ② generates another voice signal of 300Hz~3.4KHz, which is transmitted together with the up-converted signal generated by the signal intelligent control module ① to the dual-channel mixing module to generate a signal with an amplitude and a peak value of 3V. The mixing module can choose a two-way audio mixing mixing board. The mixed signal is collected by...

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Abstract

The invention discloses a two-way voice signal simultaneous interpretation transceiver. The voice signal output by a microphone at the analog sending end is digitally up-converted by a signal intelligent control module, and then transmitted to the mixing module together with the voice signal of another microphone. , the output of the mixing is sent to the signal intelligent control module for A / D acquisition and controls the output of the DDS program-controlled signal source module. The output analog signal is sent by the medium power amplifier connected to the antenna; the analog receiving end receives the signal through the antenna after filtering and analog signal frequency multiplication The module adjusts the carrier frequency, then connects to the amplifier circuit module for amplification, and transmits it to the phase-locked loop module for demodulation, and the output is respectively connected to two filters. After filtering, the voice signal with a lower center frequency is directly sounded through the speaker, and the other signal is transmitted Perform digital down-conversion to the signal intelligent control module and then drive the speaker to produce sound.

Description

technical field [0001] The present invention relates to a communication circuit (or a high-frequency circuit), more specifically, it relates to a two-way voice signal simultaneous interpretation transceiver. Background technique [0002] As a communication technology, radio communication technology has developed quite maturely since the end of the 19th century. As the product of this technology, FM transceiver equipment is widely used in civilian and military fields. Although the popularity of the Internet, mobile phones, televisions and other equipment has crowded out the market for FM transceivers such as FM radios and walkie-talkies, there is still much room for development in the fields of aviation communications and natural disasters. [0003] Traditional FM transceivers, such as FM radios, can only transmit one voice signal, and have disadvantages such as complex circuits, unstable operation, and volume. Due to the limited FM frequency band, using a single frequency ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/40H04B1/50
CPCH04B1/40H04B1/50
Inventor 刘杰吴强马婧妍禤祖年刘光鑫马潘
Owner BEIJING UNIV OF TECH
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