> For the complete documentation index, see [llms.txt](https://irosyadi.gitbook.io/irosyadi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://irosyadi.gitbook.io/irosyadi/note/convolution.md).

# Convolution

* Why calculation of convolution include reversing its input (or its impulse response)?
  * [How can output sequence be equal to the sum of copies of the impulse response, scaled and time-shifted signals? - Signal Processing Stack Exchange](https://dsp.stackexchange.com/questions/3482/how-can-output-sequence-be-equal-to-the-sum-of-copies-of-the-impulse-response-s/3495#3495)
  * [Flipping the impulse response in convolution - Signal Processing Stack Exchange](https://dsp.stackexchange.com/questions/5992/flipping-the-impulse-response-in-convolution)
  * [What is the physical meaning of the convolution of two signals? - Signal Processing Stack Exchange](https://dsp.stackexchange.com/questions/4723/what-is-the-physical-meaning-of-the-convolution-of-two-signals)
  * [pr.probability - What is convolution intuitively? - MathOverflow](https://mathoverflow.net/questions/5892/what-is-convolution-intuitively)
  * [Understanding Convolutions - colah's blog](https://colah.github.io/posts/2014-07-Understanding-Convolutions/)
  * [Convolution vs. Cross-Correlation–Glass Box](https://glassboxmedicine.com/2019/07/26/convolution-vs-cross-correlation/#:~:text=Cross%2Dcorrelation%20means%20sliding%20a,flipped%20kernel%20across%20an%20image.)
  * [The difference between convolution and cross-correlation from a signal-analysis point of view - Signal Processing Stack Exchange](https://dsp.stackexchange.com/questions/27451/the-difference-between-convolution-and-cross-correlation-from-a-signal-analysis)