The first damped frequency with maximum sound pressure of a miniature loudspeaker for cellular phones

Yui-Chuin Shiah, Jin H. Huang, Y. L. Xue

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

For improving the performance of a miniature loudspeaker, engineers have been pursuing a goal of lowering its first damped frequency to have a broad and smooth region of its sound-pressure-level response. This article applies the approach of electro-mechano-acoustical analogy to study the first damped frequency of a miniature loudspeaker used for cellular phones. Using the analogy approach, the authors derive an explicit formulation for the sound-pressure-level of a typical miniature loudspeaker of dynamic type. The veracity of the derived formulation is verified by comparing with the experimental result recorded by B and K apparatus. The derived formulation is further simplified by neglecting factors that are either irrelevant or insignificant for the first damped frequency. Through basic algebraic and calculus operations, this article also presents an explicit form of the first damped frequency. This work has laid the platform for engineers to tailor the design in pursuit of improving the performance of miniature loudspeakers.

Original languageEnglish
Pages (from-to)473-482
Number of pages10
JournalJournal of Mechanics
Volume26
Issue number4
DOIs
Publication statusPublished - 2010 Jan 1

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Loudspeakers
loudspeakers
sound pressure
Damped
Acoustic waves
formulations
engineers
Analogy
Formulation
Engineers
Pursuit
calculus
Calculus
platforms
Sound
Experimental Results

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Applied Mathematics

Cite this

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The first damped frequency with maximum sound pressure of a miniature loudspeaker for cellular phones. / Shiah, Yui-Chuin; Huang, Jin H.; Xue, Y. L.

In: Journal of Mechanics, Vol. 26, No. 4, 01.01.2010, p. 473-482.

Research output: Contribution to journalArticle

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