Orchestra band concert (Research)

This afternoon was awesome. My family had a tiny barbeque and i also got a new iPhone, which made my day (or year). After eating dinner, my mom and i set off to high school to watch my sister playing in an orchestra. Although I've played a few instruments in my life, I have never engaged myself in playing those types of instruments. My sister was playing flute in the band, and when every single instruments were added up and created a euphony, it couldn't have been sounded better than that.

Anyways, the performance was great. There were two groups of quartets that played great music and the last pieces, which was star wars theme songs, were amazing. Meanwhile, I tried to figure out how the high or low sound was made. For example, looking at a flute, i could see it has a thin and a long body while a sax has a huge and relatively short body. And then i thought, since the pitch of the sound is determined by the frequency, (higher frequency, higher note) the narrower body gives room for more reflection of the sound, thus it will have a higher frequency, while the larger body will take more time for sounds to reflect off, then it will have a lower frequency.

There, there is the secret to the pitch of a sound!