I'm looking at using IPP to optimize a 1024 point FIR filter. For my application I need to update the coefficients every sample, so that the coefficients are smoothly interpolated between different coefficient sets. The function ippsFIR_Direct_32f seems to do what I need, but it's deprecated in IPP v8, so I'd rather user something else if there is a better option.
The other FIR functions, such as ippsFIRSR_32f, look like they require a seperate intitalization of the coefficient buffers (using ippsFIRSRInit), which I don't think will work for me since I need to update the coefficients within audio processing interrupt, so I can't have any memory allocation or costly copying of data.
Any suggestions?
Thanks.