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An analog voice handset for testing

A voice and handle technology, applied in telephone communication, branch equipment, electrical components, etc., can solve the technical means of no voice handle and other problems, and achieve the effect of good voice effect

Active Publication Date: 2019-11-19
烟台北方星空自控科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, there is no effective technical means to replace the voice handle when performing a call test or when a voice handle is connected to multiple devices

Method used

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  • An analog voice handset for testing

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Embodiment Construction

[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0019] Please refer to figure 1 As shown, it is a structural schematic diagram of the simulated voice handle for testing of the present invention. The voice handle includes: a voice codec chip (DAC chip) 100, a permalloy audio transformer 200, a T-shaped attenuator 300 and an optocoupler 400, wherein,

[0020] The permalloy audio transformer 200 is provided with two sets of transformers, the impedance ratios are 150Ω:150Ω, 600Ω:600Ω respectively, the input ends of the two sets of transformers each have a terminal connected to the system ground GND, and the non-grounded ends are respectively connected to the voice The codec chip 100 and the T-shaped attenuator 300; the output ends each have a terminal connected to t...

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Abstract

The present invention discloses an analog voice handle for testing. The analog voice handle comprises a voice coding and decoding chip, a permalloy audio transformer, a T-type attenuator and an optocoupler; two sets of transformers are arranged in the permalloy audio transformer; the impedances of the two sets of transformers are 150: 150 and 600: 600 respectively; one terminal of the input end of each of the two sets of transformers is connected with system ground; one terminal of the output end of each of the two sets of transformers is connected with voice handle ground; the non-grounding ends of the two sets of transformers are an MIC lead and a PHONE lead respectively; the voice handle ground and the system ground are connected with each other through a capacitor; the T-type attenuator includes resistors R1, R2 and R3; the first end of the resistor R2 is connected with the AO end of the voice coding and decoding chip; the second end of the resistor R2 is connected with the first end of the resistor R1 and the first end of the resistor R3; the second end of the resistor R3 is grounded; the second end of the resistor R1 is connected with the non-grounding end of the input end of the 150: 150 transformer in the permalloy audio transformer; and the non-grounding end of the input end of the 600: 600 transformer in the permalloy audio transformer is connected with the AI end of the voice coding and decoding chip; and one output end of the optocoupler is a P TT lead.

Description

technical field [0001] The invention relates to voice communication control products and testing products, in particular to an analog voice handle for testing. Background technique [0002] The voice handle is a handset device used for backpack or vehicle-mounted equipment, and has the functions of sending, receiving, and PTT. Most of the voice handles adopt a passive design, and there are circuits such as power feeding and signal conditioning on the device side, which supply power to the voice handle and filter and amplify the voice signal. At present, for the testing and use of the voice handle interface, most people still use the mode of calling into the microphone to test the quality of the handle interface, and there is no better automated testing and simulation means. With the development of light weight of all kinds of vehicles, the space inside the car becomes smaller, and the miniaturization and integration of equipment have become a development trend. The situatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M1/24
CPCH04M1/24
Inventor 梁俊杰郭秋明许兵邢庆瑶
Owner 烟台北方星空自控科技有限公司
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