Multimedia collecting device and method

Abstract

The invention discloses a multimedia collecting device and method, and belongs to the field of multimedia. The device comprises an audio collecting unit, an audio analyzing unit and a video synchronizing unit. The audio collecting unit comprises at least four collecting channels and is used for collecting audio signals given out by a speaker. The audio analyzing unit is used for carrying out matching analysis on the characteristic quantity in collected audio signals of the speaker in a preset voice model and locating the position information of the speaker in real time. The video synchronizing unit is used for adjusting a camera in real time according to the position information of the speaker, and thus the camera is made to collect video signals containing the speaker. According to the multimedia collecting device and method, detection and collection are carried out on an external sound field through the at least four channels, the obtained current speaker in the sound field is tracked based on the voice model, the relative position of the speaker is obtained, and the camera is adjusted in real time to carry out the synchronous collection of audios and videos. Furthermore, the four collecting channels are arranged in balance, the camera can rotate flexibly, the range of audio collection is enlarged through the multiple channels, and thus the audios with stereo effect quality are collected.

Description

Technical field [0001] The invention relates to the field of multimedia, in particular to a multimedia collection device and method. Background technique [0002] With the rapid development of sensor technology, electronic technology and signal processing technology, video conferencing has become the best way to communicate between companies. Using video conferencing, you can communicate with multiple people at the same time, and people can also talk face to face. In offices and educational institutions around the world, video conferencing can also be used for learning, training, and meeting with contacts without the need for travel. Video conferencing can not only save telephone bills, but also help to improve the environment and reduce business expenses in arranging employees to go out for meetings. [0003] Current video conferencing systems often use a combination of PTZ cameras and audio capture systems. The operator of the PTZ camera controls the camera's swing and zoom to ...

AI Technical Summary

Problems solved by technology

However, since the device is a portable device, the rotation angle of the camera can only be rotated within a predetermined range, and the audio collection range is also limited, resulting in poor audio collection effect, often with noise and echo

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