topic Does IPP contains Butterworth filter with arbitrary attenuation at the cut-off frequency? in Intel® Integrated Performance Primitives

Does IPP contains Butterworth filter with arbitrary attenuation at the cut-off frequency?

JohnSilver — Mon, 06 Jan 2025 19:00:17 GMT

HI ALL,

I am using Butterworth filter.

It has -3dB at cut-off.

I need a low pass filter where attenuation at cut-off frequency can be specified.

I didn't found it in IPP.

Maybe I am missing something or maybe I need to use another library?

Thanks in advance

Re: Does IPP contains Butterworth filter with arbitrary attenuation at the cut-off frequency?

Ruqiu_C_Intel — Tue, 07 Jan 2025 03:18:05 GMT

Have checked IPP developer reference IPP iirgenlowpass-iirgenhighpass ?

Butterworth filter having a fixed attenuation of -3 dB at the cut-off frequency is based on the design characteristics of Butterworth filters. This is a fixed characteristic and cannot be changed without altering the fundamental nature of the Butterworth filter.

Re: Does IPP contains Butterworth filter with arbitrary attenuation at the cut-off frequency?

AlHill — Tue, 07 Jan 2025 16:29:02 GMT

@dusktilldawn It is amazing how fast you can get these chatgpt answers posted.

Doc (not an Intel employee or contractor)
[Fear and the desire for control are primary motivators for shadow dwellers. ]

Re: Does IPP contains Butterworth filter with arbitrary attenuation at the cut-off frequency?

JohnSilver — Tue, 07 Jan 2025 17:35:59 GMT

HI Again

It's JohnSilver speaking and I am a human.

Thanks to all HUMANS and SKYNET for help.

I will try to implement and write back.