Optimization of a Fixed Virtual Sensing Feedback ANC Controller For In-Ear Headphones with Multiple Loudspeakers
Optimization of a Fixed Virtual Sensing Feedback ANC Controller For In-Ear Headphones with Multiple Loudspeakers
复制标题
DOI：
10.1109/icassp43922.2022.9746327
复制
发表时间：
2021-10
期刊：
影响因子：
--
通讯作者：
Piero Rivera Benois;R. Roden;Matthias Blau;S. Doclo
中科院分区：
文献类型：
--
作者：
Piero Rivera Benois;R. Roden;Matthias Blau;S. Doclo
在本文中，我们考虑一个内置麦克风和多个扬声器的入耳式耳机，我们提出了一个凸目标函数的优化过程，以获得一个固定的多扬声器ANC控制器，旨在最大限度地减少鼓膜处的声压。基于虚拟麦克风布置（VMA）技术和扬声器与鼓膜之间的测量声学路径，ANC控制器的FIR滤波器被联合优化以最小化鼓膜处的功率谱密度，受到设计和稳定性约束。对于具有两个扬声器的入耳式耳机，将所提出的多扬声器VMA控制器与两个单扬声器VMA控制器进行比较。具有扩散噪声的仿真结果表明，当与两个单扬声器VMA控制器相比时，对于低于300 Hz的频率，多扬声器VMA控制器有效地将衰减提高高达约10 dB。
In this paper we consider an in-ear headphone equipped with an inner microphone and multiple loudspeakers and we propose an optimization procedure with a convex objective function to derive a fixed multi-loudspeaker ANC controller aiming at minimizing the sound pressure at the ear drum. Based on the virtual microphone arrangement (VMA) technique and measured acoustic paths between the loudspeakers and the ear drum, the FIR filters of the ANC controller are jointly optimized to minimize the power spectral density at the ear drum, subject to design and stability constraints. For an in-ear headphone with two loudspeakers, the proposed multi-loudspeaker VMA controller is compared to two single-loudspeaker VMA controllers. Simulation results with diffuse noise show that the multi-loudspeaker VMA controller effectively improves the attenuation by up to about 10 dB for frequencies below 300 Hz when compared to both single-loudspeaker VMA controllers.