From Internet Network:
|posted: 3/14/2008 at 1:13:46 PM ET|
Your question isn't very specific, but hopefuly this will help a little bit. The hairpin thing opening on the right is called a crescendo. It's an instruction to get louder. The longer the crescendo, the more gradual the increase in volume. Often it has the beginning and destination dynamics on either side (p=piano, soft, the more 'p's the softer. mp= mezzo piano, medium soft. mf=mezzo forte, medium loud. f=loud, the more 'f's the louder). A hairpin opening to the left is the opposite of a crescendo, a decrescendo, and with it you get softer.
Acoustics is different from dynamics- it's how the building you're making music in reacts to the music. It has nothing to do with the musician himself. It's whether the sound bounces around, gets lost, is absorbed, etc.