An efficient implementation of finite precision filter for HRTF
Zhu Guang-xin · Journal of Circuits and Systems · 2012
According the FWL(finite word length) effects produced by the digital device of HRTF digital filter implementation,an efficient implementation of finite precision filter for HRTF is proposed.A new method called YWB(Yule-Walker + Balance Model Truncation) is used to reduce system order,normal realization is used to reduce the FWL effects,and Schur decomposition is used to reduce the implementation complexity.Simulations are presented to demonstrate that YWB has the superior order reduction effect,and that the efficient implementation not only can be effective against the FWL effects,but also can reduce the implementation complexity significantly.