噪声与振动控制Issue(1)：26-31,6.DOI:10.3969/j.issn.1006-1335.2016.01.006
一种应对窄带主动噪声控制中频率不匹配的方法
A Method for Accommodating Frequency Mismatch in Narrowband Active Noise Control
摘要
Abstract
In a narrowband active noise control (ANC) system, the reference signals are usually generated through non-acoustic sensors. The measured synchronous frequencies of the reference signals will be different from the true frequencies of the objective noise due to the sensor’s aging or fatigue accumulation. This difference is referred as frequency mismatch (FM). In this paper, based on AR model, an improved FM compensation method was proposed by adding a delay module and a corresponding amplitude and phase adjuster. In fact, this method constructs the signals containing implied true frequencies through delays and superposition so as to raise the phase matching rate and accuracy. Simulation and analysis show that the designed FM compensation method can effectively deal with more than 15 % of the FM with faster convergence rate.关键词
声学/窄带主动噪声控制/频率不匹配/延迟/幅值相位调节Key words
acoustics/narrowband active noise control/frequency mismatch (FM)/delay/amplitude and phase adjustment分类
通用工业技术引用本文复制引用
夏国芳,刘剑..一种应对窄带主动噪声控制中频率不匹配的方法[J].噪声与振动控制,2016,(1):26-31,6.基金项目
国家自然科学基金 （）
