标准声学头模研究及其在新媒体虚拟音效技术中的应用

项目名称： 标准声学头模研究及其在新媒体虚拟音效技术中的应用

项目编号： No.60803062

项目类型： 青年科学基金项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 齐娜

作者单位： 中国传媒大学

项目金额： 19万元

中文摘要： 由于移动新媒体的特殊性，决定了声音重放主要采用耳机重放模式。采用仿真人工头模录音技术，通过耳机进行重放，可在聆听者双耳处产生和原声场一致的主要空间信息，获得良好的空间感和声场逼真度。而目前国外现有的仿真人头都是根据西方人种的平均生理尺寸而设计的，并不能适合于中国人。本项目研究重点围绕设计符合中国成年男性生理尺寸标准的声学头模展开，对具有不同耳廓细节结构以及不同官能结构和头部尺寸的人工头模进行HRTF测量分析，并结合主观评价实验探讨这些因素对声源定位的影响。利用仿真人工头模进行双耳录音并建立素材库，对不同类型的双耳录音结果进行比较分析，提出双耳录音的技术要点、适用范围等。本项目首次提出针对中国人的生理特点研究制作能反映绝大多数中国人听觉特性的标准声学头模，并以此为基础探讨双耳录音技术的核心技术以及适用性等。该技术可应用于移动多媒体技术中立体声的录制和回放、基于双耳听觉的虚拟声环境技术等领域，具有重要的实用价值。

中文关键词： 人工头模；双耳录音技术；耳机重放；标准声学头模

英文摘要： For the particularity of mobile new media, headphone reproduction is mainly used in sound reproduction. Using headphone reproduction for the dummy head recording technology, the same major spatial information will be picked up as the original acoustic field at the spot of the listener's ears. So that a good sense of spaciousness and high fidelity will be obtained. But, at present the available artificial heads abroad are designed based on the average physical size of the Western, which are not suitable for Chinese people. The focus of our research project is carried out based on the standard acoustical dummy head model which meets the physical size of the Chinese male adults. The HRTF of dummy head was measured and analyzed，which is installed pinnae with different detail structures and with different head-size and different functional structure. The factors which impact on the sound source location is discussed combined with the subjective listening experiment. The standard dummy head was used for binaural recording and the material database was built. Furthermore, by analyzing the results from different types of binaural recording, the key technique of binaural recording and range of application was proposed. The standard acoustical dummy head model was proposed for the first time, which depends on the study of physiological characteristics of the Chinese and can reflect the hearing acoustic characteristics for the majority of Chinese. According to it, the key technique of the binaural recording and the range of application is studied. This technique can be applied to 3d recording and reproduction technique in mobile multimedia, virtual acoustic environment technique based on binaural hearing and other field, so it has important practical value.

英文关键词： dummy head；binaural recording technique；headphone reproduction；standard acoustical dummy head