Re: How do YOU handle this disparity in fft?

[Macy]

When you use the Hanning Window, be sure to multiply times 2, else you get a 
reduction in signal strength.

There are some 'better' shaped windows used by the ADC/DAC chip makers to make 
their plots look good. But was not able to get a definitive answer on exactly 
what their functions were, but something like a squared hanning window can 
preserve more energy with less 'distortion', or a tanh function type thing.

There's probably an 'ideal' shape out there.



--- address@hidden wrote:

From: Sergei Steshenko <address@hidden>
To: Doug Stewart <address@hidden>, Mike Miller <address@hidden>
Cc: "address@hidden" <address@hidden>
Subject: Re: How do YOU handle this disparity in fft?
Date: Tue, 11 Feb 2014 06:02:51 -0800 (PST)

>>...snip....

That's why overlapping windows are used and the windows are typically Hamming 
or Hanning ones.The rule of thumb is: if you don't know what window to use, use 
the Hanning one.


Regards,
  Sergei.