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Why the headset plug the bass more obvious?

In the case where the headset is tightly connected to the outside, the sound pressure received by the human ear is proportional to the displacement of the loudspeaker unit. If there is a leak, the sound pressure received by the human ear and the volume of the loudspeaker unit The proportion of the sound pressure received by the human ear is proportional to the acceleration of the vibration volume of the loudspeaker unit. For ease of explanation, regardless of the speaker in different leakage conditions of vibration changes (in fact, change, but does not affect the conclusion), that is, the same amplitude. Loudspeaker unit vibration volume displacement = volume velocity / angular frequency = square of the volume acceleration / angular frequency, so the low frequency is increased in the case of tightening.

Headphones - the human ear to receive this process can be seen as a hand to block the syringe outlet. beats by dre cheap The pistons of the syringe are equivalent to the beats by dre on sale headphones of the headphones, and the hands cover the skin at the exit to the equivalent of the tympanic membrane. If the syringe cheap beats by dre does not leak, push the air in the syringe cylinder to fit the pressure at the exit to increase the pressure, how much the piston is pushed, and how much the pressure will rise. If the syringe leaks, it slowly pushes the piston, does not increase the pressure inside the syringe, the hand will not feel the pressure changes; and quickly push the piston, despite the leak, the hand can still feel the pressure changes. In other words, the movement of the piston when the syringe leaks is more violent to cause a change in the pressure inside the syringe and to allow the hand covering the exit to feel this change.

In the case where the headset is tightly connected to the outside, the sound pressure received by the human ear is proportional to the displacement of the loudspeaker unit. If there is a leak, the sound pressure received by the human ear and the volume of the loudspeaker unit beats by dre The proportion of the sound pressure received by the human ear is proportional to the acceleration of the vibration volume of the loudspeaker unit.