A multi-harmonic amplitude and relative-phase controller for active sound quality control
An adaptive algorithm is proposed for controlling amplitude and relative-phase. A number of harmonic components can be dealt with without interfering with each other. The proposed controller incorporates a strategy for facing impulsive disturbances. Reductions of up to 39dB and relative-phase shifts between [??,?] [ ? ? , ? ] are attained. SQ targets based on Zwicker-Loudness and Roughness can be attained.
relative-phase control sound quality asac asqc engine noise frequency-domain adaptive control