hi wan,
what are the levels of this output?
if they are the least significant bits,
then this is likely from round off noise.
best wishes,
dan
On 1/12/2010 6:45 PM, [email protected] wrote:
Hi All:
I use a matlab sine wave generator to generate a sine wave as an input
to PFB and FFT.
But I find I get a little DC output and a few small steps from FFT
output. I am pretty sure there is no DC added into the input signal.
So where these DC could be from?
And why there is some small steps on the noise floor?
For the details of spectrum output, please see the attached.
Thanks
Wan
