Multi sound channel/Hi-Fi visual telephone

Abstract

The invention discloses a multichannel / high-fidelity visible telephone, comprising CPU, video signal processing system, and audio signal processing system. And an audio signal input unit of the audio signal processing system comprises two independent sets of audio signal collection modules, audio signal A / D conversion modules and audio signal coding modules, where each audio signal A / D conversion module makes analog-to-digital conversion on the audio signal collected by the audio signal collection module and outputs the digital audio signal to the audio signal coding module; an audio signal output unit of the audio signal processing system comprise two independent sets of audio signal decoding modules, audio signal D / A conversion modules and audio signal output modules, where each audio signal D / A conversion module makes digital-to- analog conversion on the audio signal decoded by the audio signal decoding module and outputs the analog audio signal to the audio signal output module.

Description

technical field [0001] The invention relates to a communication tool, in particular to a videophone capable of realizing multi-channel / high-fidelity audio effects. Background technique [0002] The development of communication technology has made the communication between people more convenient, and the voice communication technology has also developed from the traditional analog phone to the current video phone, and the video phone functions are becoming more and more perfect, and the charges are lower. [0003] This network videophone is composed of audio signal processing system, video signal processing system and central processing unit, etc. It can not only realize the traditional voice communication function, but also display the images of both parties on the phone terminal, and can conduct business meetings. Remote teaching, medical consultations, and even job interviews without worrying about costly long-distance travel. [0004] Although videophones meet people's n...

AI Technical Summary

Problems solved by technology

At present, the audio input of the videophone only supports monophonic, that is, a microphone is used to collect one channel of voice data; the audio output can only play monophonic voice, that is, the playback of audio signals uses a speaker, so the videophone cannot realize voice. stereo effect

Moreover, the current videophone can only respond to audio signals with a frequency in the range of 300Hz to 3400Hz, and cannot meet the communication and interaction quality requirements of audio signals with frequencies other than 300Hz to 3400Hz

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