![Figure 3 from Savitzky-Golay smoothing and differentiation filter for even number data | Semantic Scholar Figure 3 from Savitzky-Golay smoothing and differentiation filter for even number data | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/a8b602027873f505957aeea6beb07a02adadb49a/4-Figure2-1.png)
Figure 3 from Savitzky-Golay smoothing and differentiation filter for even number data | Semantic Scholar
![The ideal 1st differentiation (-) and the smoothed 1st differentiation... | Download Scientific Diagram The ideal 1st differentiation (-) and the smoothed 1st differentiation... | Download Scientific Diagram](https://www.researchgate.net/profile/Jianwen-Luo-2/publication/220227041/figure/fig5/AS:729402707030016@1550914565668/The-ideal-1st-differentiation-and-the-smoothed-1st-differentiation-using-the.png)
The ideal 1st differentiation (-) and the smoothed 1st differentiation... | Download Scientific Diagram
![Is there a difference between filtering a signal before or after differentiating it? - Signal Processing Stack Exchange Is there a difference between filtering a signal before or after differentiating it? - Signal Processing Stack Exchange](https://i.stack.imgur.com/tq5f5.png)
Is there a difference between filtering a signal before or after differentiating it? - Signal Processing Stack Exchange
![A low-pass differentiation filter based on the 2nd-order B-spline wavelet for calculating augmentation index - ScienceDirect A low-pass differentiation filter based on the 2nd-order B-spline wavelet for calculating augmentation index - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S1350453314000290-gr1.jpg)