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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 can only see few figures in hex. Fin hits a minimum of 401h = 1025 and this is unexpected for an input of 16 bits signed for which dynamic range would be between 32767 & -32767 max.

There are no figures for output.

Remember you are looking at display and could be scaled in a way that depends on bitwidth. So you better check actual min/max of your signals before judging on the performance.