[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: How do YOU handle this disparity in fft?
From: |
Macy |
Subject: |
Re: How do YOU handle this disparity in fft? |
Date: |
Sat, 15 Feb 2014 07:03:11 -0800 |
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.
- How do YOU handle this disparity in fft?, Macy, 2014/02/10
- Re: How do YOU handle this disparity in fft?, Macy, 2014/02/11
- Re: How do YOU handle this disparity in fft?, Macy, 2014/02/12
- Re: How do YOU handle this disparity in fft?, Macy, 2014/02/13
- Re: How do YOU handle this disparity in fft?, Macy, 2014/02/14
- Re: How do YOU handle this disparity in fft?,
Macy <=
- Re: How do YOU handle this disparity in fft?, Macy, 2014/02/16
- Re: How do YOU handle this disparity in fft?, Macy, 2014/02/16