A frame through hole away from the sound outlet reduces magnet-fixation blockage, improving sound symmetry and amplitude consistency.
An integrated signal cable joins the vibration generator between cover members, simplifying assembly and limiting step-height damage.
A movable partition changes resonance-cavity volume inside the housing to tune sound frequencies without enlarging the acoustic device or requiring batteries.
Same-material suspension and limiting parts synchronize diaphragm and voice-coil motion, reducing thickness and uneven speed.
Furniture and drape changes can degrade home audio; speaker-microphone tests compare acoustic attributes with stored values to flag recalibration.
Object detection lets a work machine limit selected external sounds in the driving room, reducing operating noise while retaining surrounding awareness.
A lower-stiffness connection member isolates the piezoelectric vibration member from its housing, reducing space needs and damage risk.
A rear-mounted passive radiator and sound-absorbing material limit vibration transfer to the stand and suppress chattering.
Relocating the solder pad onto the FPC preserves inner-yoke thickness while keeping coil welding accessible for magnetic performance.
An F-PCM diaphragm replaces a heavy tweeter voice coil to speed high-frequency response while simplifying two-way speaker assembly.
An integrated magnetic circuit serves separate bass and treble vibration systems, reducing speaker height and production cost while preserving full-range sound.
A vibrating display panel directs sound toward the front surface, preserving audio output while reducing space occupied by separate speakers.
An integrated woofer–tweeter magnetic circuit uses an auxiliary magnet to raise tweeter sensitivity while reducing headphone thickness.
Nested sound units reduce axial stacking while separate coils and diaphragms support full-frequency sound in a compact earphone core.
A conductive insertion member connects the second voice coil to an external circuit board while winding controls its vibration amplitude.