| 杜博凯,曾向阳,洪汐.基于等效源法插值的声场重放方法[J].声学技术,2022,41(1):103~107 |
| 基于等效源法插值的声场重放方法 |
| Sound field reproduction based on equivalent source interpolation method |
| 投稿时间：2021-07-20 修订日期：2021-08-25 |
| DOI：10.16300/j.cnki.1000-3630.2022.01.015 |
| 中文关键词: 声场重放 等效源法 数据插值 |
| 英文关键词: sound field reproduction equivalent source method data interpolation |
| 基金项目:国家自然科学基金资助项目（11774291）。 |
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| 中文摘要: |
| 声场重放旨在保留声音内容与声场空间特性，创造或再现一个真实的空间声学环境。一套在真实“听音室”实现的声场重放听音系统，需要对扬声器阵列的声传递函数进行多次测量，这个过程繁琐且耗时。文章提出一种等效源法插值重放方法，在传声器采样率较低的情况下，实现了扬声器阵列声传递函数在整个目标重放空间内的插值。对比传统的声压匹配法，所提出的方法，可以减少扬声器阵列声传递函数测量次数，有效降低重放误差。在封闭空间中，系统性能受到壁面反射声的影响，重放误差也随之增大，但仍在可接受区间内。 |
| 英文摘要: |
| Sound field reproduction aims to create or reproduce a real spatial acoustic environment on the basis of retaining sound contents and sound field spatial characteristics. For a sound field reproduction listening system implemented in a real listening room, the acoustic transfer function of the loudspeaker array needs to be measured several times, which is cumbersome and time-consuming. In the case of low microphone sampling, an equivalent source interpolation method is proposed in this paper to realize the interpolation of the acoustic transfer function of the loudspeaker array in the whole target reproduction space. Compared with the traditional sound pressure matching method, the proposed method can effectively reduce the reproduction error and the measurement times of the acoustic transfer function of the loudspeaker array. As the influence of the reflections from walls in enclosures, the reproduction error increases under the reverberant condition, but it is still in the acceptance range. |
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