The Research And Implementation Of The Video Conference Intelligent Remote Control Based On The Speech Interaction

As an important part of video conference system, the remote control is the direct access for users to participate in the video conference.the remote control which is used to control video conference is usually based on the specific infrared remote control at present, and the video conference intelligent remote control product that based on the speech interaction is s till scarce.To research and implement a video conference intelligent remote control based on the speech interaction is of important practical significance and applicable value.This paper is based on the Coolview video conference system which developed by the key laboratory of computer network in Guangdong province, to research and design speech interaction function on its Android remote control platform and realize the video conference intelligent remote control based on the speech interaction.This paper has designed and implemented two kinds of speech interaction modes, direct speech interaction and semantic understanding speech interaction. For direct speech interaction mode, in order to obtain faster speech recognition rate and higher speech recognition accuracy, it collects and builds the speech corpus in advance and trains language model and acoustic model independently.It designs a speech commands library which suitable for the remote control, and sets up a local speech interaction system through trans planting pocketsphinx speech recognition engine and combining with the language model and acoustic model which has trained in advance.In addition, in order to make the remote control can also communicate with people, the system uses the speech synthesis technology provided by the filter, users on one hand can use the speech commands in the library to control the remote control, and on the other hand the remote control can also give feedback to users by voice. Besides, for the convenience of the users which use the remote control for the first time or have forgotten the remote control speech commands, to make the speech interaction function of the remote control more intelligent and humanization, the paper designs the semantic understanding speech interaction mode, the user can only need to say keywords, the system will automatically parse the user’s speech commands, understand the user’s intent and make feedback to realize human-computer interaction. In order to enhance the security of video conference remote control, prevent the illegal users from stealing the user name and password to login the remote system due to the leak of personal user name and password, and destroys the normal use of video conference system, the paper also designs the function of voiceprint password login for the remote control, users can use voiceprint password to login remote control, providing user name password and voiceprint password double security guarantee.