Hi,
I am running a digital xover and room equalisation system using BruteFIR. Currently I have 1k tap xover filters feeding 65k DRC generated filters for room equalisation. I was wondering how I might convolve these two filters - my knowledge of octave is VERY basic, I just followed someone else's instructions to generate the xover filters!
I also wondered what would happen if I was to convolve a 65k tap filter with another 65k tap filter - how many taps would the resultant filter have?
Many thanks,
Chris
I am running a digital xover and room equalisation system using BruteFIR. Currently I have 1k tap xover filters feeding 65k DRC generated filters for room equalisation. I was wondering how I might convolve these two filters - my knowledge of octave is VERY basic, I just followed someone else's instructions to generate the xover filters!
I also wondered what would happen if I was to convolve a 65k tap filter with another 65k tap filter - how many taps would the resultant filter have?
Many thanks,
Chris
birkinshawc said:
I'll answer your second question first - you'll see why in a moment. Convolving an m-tap FIR with an n-tap FIR gets you a FIR of length n+m, so you gain nothing computationally by convolving FIRs. You might even lose some efficiency if BruteFIR uses a partition larger than your crossover filter length, because then you'd be calculating zeros stuffed into the coefficient set to fill out the partition.
In my opinion, you're better off keeping the crossover and DRC separate because you can tweak them individually.
Cheers,
Francois.
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