Update README.md

typos...
scott-cotton · Jan 25, 2019 · c6b07e4 · c6b07e4
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 # Faithful Hilbert Transform
 
 This repository implements the "hilbert transform" on a sound data stream in a faithful manner.
-The Hilbert transform is a phase shift in the frequency domain of all frequencies by 90%.
+The Hilbert transform is a phase shift in the frequency domain of all frequencies by 90 degrees.
 
 The mechanism implemented here is a sliding window of Fourier transforms in which only the middle
 part contributes to the output of the transform.  This buffering/windowing, at least according
 to our tests, provides much more accurate and also more efficient Hilbert transforms than say 
-use an approximation by convolution.
+using an approximation by convolution.
 
 Enjoy.