So...7/16 would be 1e+a2e+a3e+a4e+a5e+a6e+a7e+a? Or have I just got that totally wrong? And you have no idea how long it took to write that on an iphone...LOL
Wouldn't a measure of 7/16 just be "1e+a2e+"? We use e,+,a to denote a 1/16th note each so Guz's example above shows a measure of 7/4. Or 28 16th notes.
In addition to understanding what the top and bottom numbers signify, I try to look at time sigs as fractions. A measure of 4/4 also has 16 16th notes but we simply and we use 4/4. Which equals 1.
A 7/16 time sig. has one 16th note LESS than half a measure of 4/4. On the other hand, a measure of a time sig such as 7/4 that is greater than one (7/4 > 1), would feel like a measure of 4/4 plus 3 EXTRA 1/4 notes. In the context of a simple rock groove I would play 7/4 as kick, snare, kick, snare (then an extra) kick, snare, kick. And those seven quarter note hits would equal 7/4.
Time sigs that are less than 1, such as 7/16 or 7/8 or 15/16, almost have a rushed feeling where the beat turns around to start a new measure slightly before where we are use to hearing beats in 4/4 resolve.
A time sig as small as 7/16 might be too short and sudden for a groove and may work best as a one measure complex turnaround. I would feel a measure of 7/16 as follows with (H)ats, (K)ick and (S)nare.
K H H H S H H =Each letter is a 16th note
1 e + a 2 e +
I hope this helps!