Departmental Bulletin Paper デジタル直接駆動スピーカにおける負荷非線形性の影響の検討
Nonlinear effect of output devices in digitally direct driving speaker system

宮本, 敏之  ,  MIYMOTO, Toshiyuki

562015-03-24 , 法政大学大学院理工学・工学研究科
A digitally direct driven speaker system can directly convert a digital signal to audio signal. This drives directly voice coils by a digital signal. To improve EMI performance a ferrite bead is inserted between a digital driver circuit and a voice coil. In this paper a nonlinear effect of the ferrite bead is discussed. A nonlinearity effect reduction method is presented.

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