考虑听觉主观性的封闭空间结构声有源控制

提出一种考虑人耳听觉主观性的结构声有源控制.将响度滤波器集成入控制系统,适当衰减人耳不敏感频率成分以及放大敏感成分,使系统控制目标从声压转变成响度.给出响度滤波器设计和选择的方法,导出结构声有源控制Loudness-LMS控制算法,并应用于矩形封闭空间的有源力控制消声.仿真控制结果表明:与声压控制相比,响度控制具有更好的主观听觉效果.

Active Structural Acoustic Control for an Enclosure Using Subjective Measures

In order to improve subjective effects, the response of human auditory system is taken into account in active structural acoustic control (ASAC) by adding several loudness filters in the system. The audio frequencies, which human ear is insensitive to, are attenuated properly by those filters, while sensitive frequencies are amplified. Loudness-LMS algorithm is derived and used in ASAC system. As an example, the new ASAC is applied to a rectangular enclosure. A comparison is made between the new and conventional ASAC system. The simulation results indicate that the new ASAC can achieve better subjective effects than the conventional system.