Pre-inverse Active Noise Control System Using Inverse Transfer Function Estimation of Secondary Path with Auxiliary Filter
Pre-inverse Active Noise Control System Using Inverse Transfer Function Estimation of Secondary Path with Auxiliary Filter
复制标题
DOI：
10.2299/jsp.21.25
复制
发表时间：
2017-01
期刊：
影响因子：
--
通讯作者：
Kazushi Otsuki;N. Sasaoka;Ryosuke Minagi;Y. Itoh
中科院分区：
文献类型：
--
作者：
Kazushi Otsuki;N. Sasaoka;Ryosuke Minagi;Y. Itoh
本文提出了一种预逆有源噪声控制（PIANC），以解决滤波-x ANC（自适应噪声控制）的不稳定问题。PIANC使用平坦延迟信号而不是滤波输入信号。然而，由于传统的PIANC使用串联自适应系统来估计次级路径的逆传递函数，因此由于偏差误差，降噪能力下降。为此，本文在次级通道的逆传递函数估计中引入辅助滤波器，利用初级通道的延迟来构造无偏置结构，仿真结果表明，该方法有可能优于Filtered-x ANC，具有上级的优点。此外，所提出的方法是由一个DSP（数字信号处理器）。
We propose a pre-inverse active noise control (PIANC) in order to solve the unstable problem on a Filtered-x ANC (adaptive noise control). The PIANC uses the flat delayed signal instead of a filtered input signal. However, since the conventional PIANC uses a series adaptive system to estimate the inverse transfer function of a secondary path, the noise reduction ability is degraded due to bias error. Therefore, this paper introduces an auxiliary filter into the estimation of the inverse transfer function of the secondary path. The proposed method configures the bias free structure by taking advantage of the delay in the primary path. This paper shows that the proposed method has possibility to be superior to a Filtered-x ANC by simulation results. In addition, the proposed method is implemented by a DSP (digital signal processor).