| Panoramic technology,as a branch of virtual reality technology which develops rapidly,has been widely used in many fields.The biological field practice teaching resources constructed by VR technology can break the limitations of time and space.Teachers and students can practice field teaching repeatedly until they acquire a certain degree of proficiency without leaving the house,which could effectively solve the problem when it comes to the practice of biology field teaching.However,current VR panoramic resources still lacks in meeting the actual needs of biological field practice teaching for example,VR panoramic video can show the visual picture of social,reproductive and other behaviors between animals,but the metaphoric information such as sound mechanism and sound signals can be hardly conveyed to the learner.Therefore,it is urgent to explore a visual and auditory VR panoramic resource construction scheme to create a more realistic immersive learning environment.Aiming at the related problems in biological field practice in the habitat investigation as well as the animal and plant identification teaching,this paper integrates visual and audio synchronization methods into VR panoramic resources to realistically simulate the relevant audiovisual experience in actual field scenes.To start with,it will summerise and classify the sound behaviors of different kinds of animals.The sound effects in the virtual environment are designed according to the principle of human ear hearing.Then,based on the real-time rendering of binaural and the principle of audio and video synchronization,a biological field practice teaching activity VR is designed and constructed.At last,this study also takes the Shennongjia Chuan Golden Monkey practice teaching as a case to analyze and evaluate the actual teaching effect of VR audio-visual fusion panoramic resources.The specific research contents mainly include:(1)According to the sound characteristics and behavior of wild animals,combined with binaural real-time rendering technology,design a sound audible scheme of VR panoramic resources,including digital collection of animal sounds,synthesis of realistic sounds,and binaural positioning design sound dynamic changes and other content.(2)This paper also construct a biology field practice VR teaching resource through the fusion of Visualization and Auralization.Firstly,according to the teaching needs,divide the system function.Secondly,construct the three-dimensional landscape topographic map of the field practice area,and explore the planning route of the practice point and its switching relation.Finally,based on the virtual scene coordinate transformation,realized the learner is in sync with the head and ears.(3)Taking the teaching practice of Shennongjia Chuan Golden Monkey as an example,the evaluation of VR panoramic resources is carried out through the form of small-scale application and sample analysis,and the actual effect of real-time synchronization of visual and auditory is analyzed.The results demonstrate that the panoramic resources can strengthen the learner's immersive experience,enhance the realism of teaching resources,and improve students' interest in learning. |
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