Sometimes you can get away with taking the snare, reversing it, fading out that reversed snare and then pasting that back on to the original snare.
If you are careful and use multiple fades or and reverb this is sometimes a useful approach.
Alternatively you can use envelopes in the sampler.
If you are careful and use multiple fades or and reverb this is sometimes a useful approach.
Alternatively you can use envelopes in the sampler.