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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

Without knowing the design and the involved hardware, the question can't be answered I fear. Most Altera ADDA Dev Kits have AC coupled analog I/O, so the output bias doesn't say anything about the digital signal.