Inter-element spacing effects on Directivity of sound in a capacitive micro-speaker
سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 380
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شناسه ملی سند علمی:
ISME27_689
تاریخ نمایه سازی: 8 مرداد 1398
چکیده مقاله:
The rapid development of technology in multimedia devices requires the development and miniaturization of the smaller devices and systems such as microphones and micro-speakers. Micro speakers play an important role in personal audio devices such as cell phones,laptops and other portable systems. Energy radiated from an acoustic source can be used in multimedia devices, medical and mechanical applications, if it can be directed. In this paper, governing equation of motion of the micro-speakers diaphragm has been introduced andsolved using Galerkin-based numerical procedures. The calculated static and dynamic pull-in voltages have been calculated and validated by previous studies and a good agreement has been achieved among the results. Directional behavior a discrete line array (consists of anumber of drivers) of speakers has been considered under different inter-element space . Moreover, the sound steering has been obtained at desired angle with a variety of inter-element to wave length ratios.
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نویسندگان
Mohammad Homaei
Mechanical Engineering Department, Urmia University
Mohammad Fathalilou
Mechanical Engineering Department, Urmia University
Rasool Shabani
Mechanical Engineering Department, Urmia University
Ghader Rezazadeh
Mechanical Engineering Department, Urmia University