improvement of FixNoise in FAAC using FIR library 2017-01-11 02:36:13 Hi everyone,I am porting the FAAC encoding process on an embedded system. Due to the limitation of our CPU, the original encoding rate of FAAC is too slow to meet our requirements. After replacing some math functions with ARM DSP library, we successfully saved roughly half the encoding time. However, we can't go further since currently most of the encoding time is used in the FixNoise function. I am not quite sure what is idea in this FixNoise function. But it looks like some kind of filtering noise? So my question is: is it possible to use FIR library, e.g, the FIR library provided by ARM, to reduce the time used in this FixNoise function? Or does anyone here have some suggestions about the further improvement? Thank you very much.Regards,Robbie.