Researchers have demonstrated haptic interfaces that display high-frequency vibrations by
applying an oscillating waveform to a linear voice-coil actuator (also referred to as a linear …

Class-D audio amplifiers are switching circuits that produce serious Electromagnetic (EM)
emissions and disturb the surrounding electronics. In order to reduce these emissions …

This paper deals with the heterogeneous characterization of a microelectromechanical
system (MEMS) electrodynamic micro-speaker. This MEMS micro-speaker consists of an …

This paper presents a method of estimating the parameters of an electromagnetic transducer
without sensors. The proposed method utilizes the measured admittance of the …

A nonlinear control-based class-D amplifier using a DC power source for medium-power
audio applications is proposed in this paper. The amplifier utilises switches in a half-bridge …

This paper deals with the comparison of voltage and current driving units in an active audio
system. The effect of the audio amplifier control on the current coil of an electrodynamic …

Current driven loudspeakers have previously been investigated but the literature is limited
and the advantages and disadvantages are yet to be fully identified. This paper makes use …

the present disclosure relates to a gain function controller configured to determine a variable
gain for a plurality of sub-band signals, which can be used to drive a loudspeaker for …

鉄道車両や自動車などの機械構造物や橋梁, タワーなどの大型構造物に対して,
大振幅または長期的な振動が発生すると, 破損や疲労破壊, 快適性・操作性の劣化などの様々な …

A major reason for compromised audio quality with a coil-type loudspeaker is its complex
impedance profile, which disturbs the intended algebraic linearity or linear phase behavior …