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Computation Cost for 2 biquad IIR

Started by domistep February 26, 2004
Hello,

I am trying to choose a DSP for different filtering operations.

I ll use 2 biquad IIR ( 2 IIRs of 2nd order).

I will have 3 input signals that  i will sampled at 1khz, 2khz and 10 khz.

How many MIPs odes it cost?


Thank you
Well, you will have 5 coefficient multiplies per IIR biquad and 4 or 5
additions which are usually done in parallel or as part of the MAC
instruction (depends on the DSP and fixed point/floating point mode), so
just count the multiplies.  The rest is simple arithmetic.  Hope this helps.

--
Dave Wooff
dave@dmwooff.freeserve.co.uk
domistep <domistep@free.fr> wrote in message
news:11efef01.0402261303.606e0411@posting.google.com...
> Hello, > > I am trying to choose a DSP for different filtering operations. > > I ll use 2 biquad IIR ( 2 IIRs of 2nd order). > > I will have 3 input signals that i will sampled at 1khz, 2khz and 10 khz. > > How many MIPs odes it cost? > > > Thank you