文章摘要
廖文俊,刘紫赟,高昊,沈勇.一种基于传递函数测量的扩声系统传声增益计算方法*[J].,2025,43(3):557-562
一种基于传递函数测量的扩声系统传声增益计算方法*
A method for calculating transmission gain of sound reinforcement system based on transfer function measurement
投稿时间:2024-01-14  修订日期:2025-04-26
中文摘要:
      传声增益是代表扩声系统扩声能力的核心指标。在实际扩声系统的设计和调试中,现行传声增益测量方法的复杂性和噪声情况使得人们对方法的优化具有很高的需求。该文提出了一种基于传递函数测量的扩声系统传声增益计算方法。基于传递函数的测量,该方法通过声反馈路径模型和系统稳定性判据得到最高可用增益和此增益值对应的系统传递函数,并结合房间传递函数计算出传声增益。实际声学环境中的验证实验表明了该方法计算传声增益的有效性和可靠性,可为扩声系统硬件和软件算法的设计与调试提供参考。
英文摘要:
      Transmission gain is the core index that represents the sound reinforcement ability of sound reinforcement system. In the design and debugging of the actual sound reinforcement system, the complexity and the noise condition of the current measurement of transmission gain make people have a high demand for the optimization of the method. A method for calculating the transmission gain of sound reinforcement system based on transfer function measurement is presented in this paper. Based on the measurement of transfer function, the maximum available gain and the corresponding system transfer function are obtained by the acoustic feedback path model and the system stability criterion, and the sound transmission gain is calculated with the system impulse response and the room impulse response. The verification experiments in actual acoustic environments show that the method is effective and reliable for transmission gain calculation, and can provide reference for the design and debugging of hardware and software algorithms of sound reinforcement system.
DOI:10.11684/j.issn.1000-310X.2025.03.003
中文关键词: 传声增益  声反馈模型  传递函数
英文关键词: Transmission gain  Acoustic feedback model  Transfer function
基金项目:国家自然科学基金项目(12374446)
作者单位E-mail
廖文俊 南京大学 wenjun_liao@smail.nju.edu.cn 
刘紫赟 南京大学 ziyun.liu@nju.edu.cn 
高昊 南京大学 hgao@smail.nju.edu.cn 
沈勇* 南京大学 yshen@nju.edu.cn 
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