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Altera_Forum
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14 years ago

Quantization Problem...Help Please

Hi i'm working on a 2 Channel QMF perfect reconstruction Filter bank using a tutorial in Matlab and i'm trying to implement the design on a Cyclone II FPGA board. after setting everything up i notice...
Altera_Forum's avatar
Altera_Forum
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14 years ago

I thought the problem was that i wasnt using enough bits to represent the magnitude of the sinusoid i was using as my input so i redesigned the filter to use less bits as the fraction bits thinking it would work...but i pretty much got the same results. i'm stumped. here is the image of th input and output in hexidecimal.

f_sin01 is the input, and out is the output. as u can see they are no where near each other.