Title :
Development of Slim Speaker for Use in Flat TVs
Author :
Sun, Peng ; Park, Jin-Hun ; Kwon, Joong-Hak ; Hwang, Sang-Moon
Author_Institution :
Sch. of Mech. Eng., Busan Nat. Univ., Busan, South Korea
Abstract :
Slim designs have become one of the main concerns in the development of flat digital televisions (TVs). The speaker dimensions play an important role in determining the total thickness of a TV. Conventional slim speakers contain two circular magnetic circuits. This design limits the speaker width and thereby affects the performance. This paper presents a novel slim speaker that aims at reducing the frame limitations. Electrodynamic analyses for conventional and novel designs are conducted by using finite element method (FEM). Optimization of novel design is operated by design of experiment (DOE) method and the response surface methodology (RSM). As a result, the slim speaker width has been decreased by 12.5%. Rated sensitivity of A-weighted sound pressure level (SPL) is selected to characterize the acoustic performance. The simulations and experiments reveal that the rated sensitivity shows an increase of 1.6 dBA compared to conventional slim speakers.
Keywords :
acoustic devices; design of experiments; digital television; electrodynamics; finite element analysis; flat panel displays; magnetic circuits; response surface methodology; television displays; A-weighted sound pressure level; DOE method; FEM; RSM; SPL; TV thickness; acoustic performance; circular magnetic circuit; design of experiment; electrodynamic analysis; finite element method; flat TV; flat digital television; frame limitation; optimization; rated sensitivity; response surface methodology; slim design; slim speaker development; slim speaker width; speaker dimension; Acoustics; Coils; Magnetic circuits; Magnetoacoustic effects; Optimization; Sensitivity; TV; Electrodynamics; electromagnetic force; slim speakers; sound pressure level (SPL);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2012.2197676
