The hiss reduction functionality that is provided these days in professional audio editing programs works in a far more sophisticated manner than simply rolling off the highs. For example, the user can define a very brief segment or segments of the material in which there is no music, allow the program to sample and analyze the hiss during those moments, and by taking advantage of modern computing horsepower "subtract it out" from the musical passages.
Of course, that is not to say that there won’t be undesirable side-effects. There certainly can be, but to a greater or lesser degree depending on the judgment, musical sensibilities, and expertise of the user. And more specifically on how judiciously he or she adjusts the numerous settings that are involved in using any such program, and on how aggressive he or she chooses to be in minimizing the hiss. And depending also, of course, on the nature of the material and the amount of hiss that is present to begin with.
Regards,
-- Al
Of course, that is not to say that there won’t be undesirable side-effects. There certainly can be, but to a greater or lesser degree depending on the judgment, musical sensibilities, and expertise of the user. And more specifically on how judiciously he or she adjusts the numerous settings that are involved in using any such program, and on how aggressive he or she chooses to be in minimizing the hiss. And depending also, of course, on the nature of the material and the amount of hiss that is present to begin with.
Regards,
-- Al