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speaker/science question?
today in science we were trying to find out why a speaker sounds more clear and louder when you hold a circle around it like cuff your hands around it or a cardboard box with a hole in front of it does anyone know? i was thinking something with vibrations
2 Answers
- Gary HLv 61 decade agoFavorite Answer
A speaker is a moving diaphragm that moves a mass of air forward and backward rapidly, converting electrical energy to sound energy. When the speaker is moving forward, it is pushing air toward you. Obviously, the backside of the diaphragm must be sucking at the same time. If there is no barrier that is at least somewhat separating the front side of the speaker from the back side, a lot of the sound energy will simply wrap around the sides of the speaker toward the side that is sucking, rather than radiate toward a listener. It's very much like an electrical short circuit, diverting and wasting energy where you don't want it. That is why speakers are always placed in enclosures, to prevent that waste of energy.
- Anonymous1 decade ago
the way a speaker works is that the sound waves hit air around the speaker and those sound waves travel to your ear. as soon as the vibration comes from the speaker and hits air the sound wave moves in every direction. when the cuff or cardboard is around the speaker the sound wave is forced straight and does not diffuse
