I know that the primary function of a mute, as its name implies, is to reduce the volume of the sound for a brass instrument. But I find myself wanting to use them more for color effects than anything else. And I am wondering how much that would effect the volume in the real world.
For example, in JABB, I can set cc1 to a value of 127 to get the maximum effect of a harmon mute and set cc7 to 50. I vaguely remember reading that harmon mutes have a stem that can be moved in and out to affect the quality of the sound. I suppose that means that it's possible to get the tone color of a trumpet or tombone played loudly with a mute, but without having to score them as ff or fff.
I guess what I am looking for is a workable rule of thumb to use in JABB: which cc7 ranges are comparable to which cc1 ranges. In other words, if I set cc1 to 127 because that is the character of the brass I want for a harmon or cup mute, what are acceptible ranges for cc7 (127 to 50? ... 127 to 100? ... or what?) I know that in JABB, I can set them to any value I want, but I don't want to write anything that is going to sound substantially different when played live on real brass instrument. Mostly what I am looking for here is the lowest volume (cc7) value that can be played when the expression (cc1) value is at the max (127).
I hope I have described this in a way that makes sense.