Is there a way to separate transients by length?

Suppose we have a mixture audio signal, consisting of very short transients and some that are a bit longer (in ms, or s) along with other material, like harmonics, etc. But focusing only on transients, is there a way to filter only transients that are below or above a certain length (in ms or s) so that the the rest remains intact? So if I want to filter VERY short transients, the longer transients remain in the mixture, or vice-versa? Is this possible? Can you demonstrate in MATLAB, Python or maybe show me a research paper or technique that can help me with this?