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Understanding FFT output

...t on how you calculate your FFT. The frequency to fft-bin equation is (bin_id * freq/2) / (N/2) where freq is your sample-frequency (aka 32 Hz, and N is the size of your FFT). In your case this simplifies to 1 Hz per bin. The bins N/2 to N represent negative frequencies (strange concept, I know). Fo...
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How do I use Nant/Ant naming patterns?

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Can you set a border opacity in CSS?

..., this would give a red border with 50% opacity: div { border: 1px solid rgba(255, 0, 0, .5); -webkit-background-clip: padding-box; /* for Safari */ background-clip: padding-box; /* for IE9+, Firefox 4+, Opera, Chrome */ } The problem with this approach is that some browsers do not un...
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Stream vs Views vs Iterators

...hese transformations when you ask for the next element. Scala used to provide iterators which could be reset, but that is very hard to support in a general manner, and they didn't make version 2.8.0. Views are meant to be viewed much like a database view. It is a series of transformation which one...
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Android icon vs logo

The <application> tag for the Android Manifest contains a logo attribute which I have never seen before. What is the difference between your application's icon and its logo? Is it used purely for market? ...
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Comments in .gitignore?

.... In fact, it appears that any whitespace at the end of the line is considered part of the ignore pattern. – Johann Aug 30 '12 at 19:23 ...
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Looping over a list in Python

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ipython notebook clear cell output in code

...ait=True) will generally make the result nicer if you have clear_output inside a loop. – Toke Faurby Jun 8 '17 at 23:49 1 ...
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How do I fit an image (img) inside a div and keep the aspect ratio?

I have a 48x48 div and inside it there is an img element, I want to fit it into the div without losing any part, in the mean time the ratio is kept, is it achievable using html and css? ...
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How can I have linked dependencies in a git repo?

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