Microbuzzer.com · Posted on 19-07-2010 by microbuzzer
Speaker resonant frequency
Impedance curve of the impedance of the speaker unit reaches its maximum when the first frequency corresponding to the speaker unit is called the resonant frequency or resonant frequency, called fo.
To facilitate understanding, the speaker of the vibration system can be that Cone, voice coil and the dust cover as a certain mass inertia body, and the speaker off Central and Centering support film as a flexible body, then Speaker of the vibration system is like a hanging in the spring that has a certain quality of weight, we know from physics, when they have a fixed resonance.
Speaker unit in the frequency reaches the maximum amplitude of the vibration system;
Speaker voice coil moving in the magnetic air gap induced voltage generated when the reverse is also the largest.
In fo less, since the speaker vibration control system stiffness, the speaker output sound pressure to the speed of 12dB per octave down, so the speaker unit resonant frequency is usually the speaker of the low-frequency playback limit. It is an important indicator of design.
Tags: resonant frequency, speaker
Posted in TECHNOLOGY
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