Design and Implementation of Multi-Stage Filter for Audio Applications
Gao Yua · 2014
An architecture of multi-stage filter group for processing digital audio signals was presented,which was comprised of CIC filter,the first half-band filter,the second half-band filter,the droop-correction filter and high-pass filter.By modeling and simulation,effects of parameters on the performance were analyzed,and structure was optimized.It has been demonstrated that the cascaded structure could effectively reduce the amount of computation,filter out band noise,and improve SNR of the entire link.