The interphone has already entered everyone, serves the people in each domain, its cost is inexpensive, and it is easy to operate by everyone, so it is very welcome by domestic public.
The content of design is to participate in produce the two-line interphone in technology of YOUMAI, which is different from the market products. Walkie-talkie in the market generally has an independent power supply lines, signal lines to receive and send so on, the interphone only has two lines, which are also the power lines. Costs are reduced, but the key is to ensure its utility. The main challenges of the design is to ensure that the voice signal amplification, at the same time make sure the guarantees of non-distortion.
This article introduces the design of hardware and software about interphone of the car, analyses its working principle and describes the process of debugging steps in detail.
Keywords: Interphone of the car, Signal,Distortion.
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