Schematics of magnetic circuits: (a) conventional type and (b) proposed type.
Magnetic flux density distribution in the (a) conventional and (b) proposed types of microspeaker.
Mean value flux density with respect to the voice coil displacement.
Magnetic force with respect to the voice coil displacement.
SPL results achieved using a mathematical approach.
Photographs of parts of each microspeaker: (a) conventional type and (b) proposed type.
Specifications of two types of microspeakers.
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