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Altera_Forum
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15 years ago

Unwanted offset attenuation in FIR filters

My FIR is now working so far - thanks to Altera Guru "MSchmitt" - but I still have two problems left. Please have a look at the attached pictures - there is an unwanted offset attenuation of 6dB in t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

So, as you say - it should show up centered, but it doesn't ... any idea why?

I do not understand why an unsigned input data works only for lowpasses and not for high- or bandpasses. Can you write some words?

I will try now to use a signed representation and post the outcome afterwards.