基于内容的音频参数提取与动画控制实现

Content—based Audio Parameter Extraction and Animation Realization

互联网上传送的数据以图像信息和音频信息等多媒体信息为主。近几年来,多媒体信息越来越趋向多元化和综合化,因而音频信息和视觉信息综合化也成为趋势。在此基础上,音频信息转化成视觉信息成为迫切需求。该系统以VisualC++为计算平台,提取出了4个音频特征参数,包括短时平均能量、过零率、频谱能量和倒谱值等。而动画对象采用Opengl技术绘制,动画的动作由提取出来的特征参数来控制,最终实现实时音频控制动画运动。

On the Internet, the datas are transmitted primarily by multimedia informations, including image information and audio information. In the last few years, more and more multimedia informations tend to the multiplication and integration, thus the audio frequency information and the visual information integration also becomes the tendency . On this basis, the audio frequency information into the visual information has become the urgent demand. This system takes Visual C++ as the platform , extracts 4 audio frequency characteristic parameters, including Short-time moderate energy, Zero crossing rate, Frequency spectrum energy , Cepstrum value and so on. The animation object uses the Opengl technology plan.The animation movements are controlled by the characteristic parameter and finally the real-time audio frequency realizes.