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Bug found about ipp multirate Fir filter?

tan__xiaox
Beginner
‎05-31-2011 09:12 PM
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Iused the IPP FIR funtions to build a multi-rate filter. And I found the parament "downFactor" is useless.
The length of output is source length multipled with "upFactor". I checked ippsFIR_32f and ippsMRFIRDirect_32f, the bugs is same. Is it realy a bug?
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Andrey_B_Intel
Employee
‎06-02-2011 01:28 AM
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Hi, Souledge.
Which downFactor do you use? If downFactor=1 output will be the same, but for downFactor=2 output will be two times shorter and so on. Look please ippsSampleDown function documentation in Intel Integrated Performance Primitives, Reference Manual, Volume 1, Signal Processing.

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