topic Re: FIR_Direct example? in Intel® Integrated Performance Primitives

FIR_Direct example?

danijeldomazet — Tue, 23 Dec 2003 21:56:32 GMT

Is there a FIR_Direct function example somewhere?

Re: FIR_Direct example?

Ying_S_Intel — Mon, 29 Dec 2003 16:54:34 GMT

Hi,
We do not have a sample that demonstrates the usage of FIR_Direct. Do you try to use this function for Intel Pentium Processor and Intel Itanium Processor families?

Thanks,
Ying
Intel IPP

Re: FIR_Direct example?

danijeldomazet — Tue, 30 Dec 2003 01:10:50 GMT

Yes I am trying but no success so far... I have used regular FIR function but it gave me no speed increase so I will try to do it with FIR_Direct...

Re: FIR_Direct example?

Ying_S_Intel — Wed, 31 Dec 2003 14:53:48 GMT

Actually, the ippsFIR functions is 1.5xfaster than ippsFIR_Direct functions. Because the FFT is used inside of ippsFIR , itusesfrequency-domain filtering. To compare the performance between ippsFIR and ippsFIR_Direct, you can refer the ps_ippsw7.csv (for example on a standard Intel Pentium 4 processor) under directory..ipp40 oolsperfsysdatafor detailed comparisions.

Hope it helps.

Thanks,
Ying
Intel IPP