Well, clearly that sample has been chopped from a part where you have a transient happening, so of course, it isn’t going to sound smooth if you have an impact there. You need to shop the part you are going to sustain from a portion of the sample where you only have a sustained tone without a transient.
What you do is find a more-or-less smooth loop somewhere in the middle of the sample, and loop in indefinitely after the first part plays (most samplers have this function built in).
Well, clearly that sample has been chopped from a part where you have a transient happening, so of course, it isn’t going to sound smooth if you have an impact there. You need to shop the part you are going to sustain from a portion of the sample where you only have a sustained tone without a transient.
What you do is find a more-or-less smooth loop somewhere in the middle of the sample, and loop in indefinitely after the first part plays (most samplers have this function built in).