> Convolution is mainly and primarily used as a convenient way to covert signals between time and frequency domain Btw that isn't true. That operation is calle

> Convolution is mainly and primarily used as a convenient way to covert signals between time and frequency domain Btw that isn't true. That operation is called a "transform" as in "Fourier transform" and "z-transform". The property of those transforms is that element-wise multiplication in one domain becomes convolution in the transformed domain. Element-wise multiplication in "time" domain is convolution in "frequency" domain and element-wise multiplication in "frequency" domain is convolution in "time" domain.