Loudspeakers TRIZ Cases

A display panel acts as a vibration plate driven by an attached actuator to output audio signals.

Variable spacing in the tubular bass reflex port slows airflow to suppress turbulence and friction-induced wind noise at the opening.

Segmented patterns across the suspension ring and fixed portion disperse stress concentrations, preventing warping deformation in molded loudspeaker diaphragms.

PCB trace coils eliminate wire fatigue in compact speakers, improving reliability while maintaining acoustic output.

A metal wire damper with a planar elastic part reduces resonant frequency and total harmonic distortion in sound-producing devices.

Parallel partitions create unequal acoustic paths to merge driver outputs into a coherent wavefront, eliminating high-frequency interference.

Radial fins and extraction paths manage thermal loads while maintaining low stack height.

Loop springs absorb drop impact energy to prevent voice coil damage in moving magnet actuators.

Opposing magnetization directions in nested magnets boost flux density, enabling miniaturized speakers without compromising acoustic output.

Injection molding merges magnetic components with speaker bases, reducing assembly complexity and costs.

Segmented magnet arrangement preserves magnetic force in thin speaker modules, preventing sound pressure degradation during device slimming.

A microspeaker assembly uses segmented vent holes in a back plate and printed circuit board to shape frequency response.

An integrally-designed bone conduction driver merges the voice coil and vibrating plate using a tripod cup holder.

A sound production device uses a line-like system stabilization component to secure the voice coil assembly.

Wireless intravaginal probe bypasses abdominal tissue barrier to deliver safe acoustic signals directly to the foetus.

Symmetric magnet groups drive a balanced iron core to eliminate distortion and reduce energy loss in moving iron systems.

A coaxial speaker merges treble and bass vibration systems into a single magnetic circuit to reduce overall height.

Current monitoring separates external sound signals from speaker drive currents, eliminating separate capacitive microphones and reducing power consumption.

Conductive metal shrapnels replace welding and separate suspensions to restrain voice coil swinging, simplifying assembly.

A coaxial dual-voice-coil driver uses a shared magnetic circuit to drive bass and treble coils within a single compact assembly.

A flange formed by bending the holder connection portion secures the auxiliary diaphragm to improve assembly alignment.

A waveform generation section combines audio and vibration signals into a unified output for synchronized playback.

Porous shell material resolves acoustic short circuit interference by allowing backward sound transmission while maintaining high radiated SPL.

Replacing magnetic fluid with polymer compounds swollen with liquid eliminates Joule heat scattering and flux leakage while enabling a shorter magnetic gap.

Upward-firing drivers project high-frequency sound at an acute angle, eliminating expensive ceiling installation while maintaining spatial audio quality.

A planar acoustic panel assembly uses a flat annular voice coil and radial magnetic circuit to drive sound emission.

Segmented side magnet components enhance magnetic field intensity in the voice coil gap, resolving insufficient sound sensitivity in mobile phone speakers.

Nesting the flexible suspension inside the tubular voice coil reduces installation volume while maintaining reliable low frequency control.

A segmented speaker suspension balances audio quality with device thickness by using soft materials near the driver and rigid tape elsewhere.

Helmholtz resonator duct extends low frequency response without reducing suspension rigidity.

Passive radiator generates tactile feedback through display inertia, isolating low-frequency vibration from audio output to reduce distortion.

Vibrating the display panel with front-facing sound generation directs audio forward, avoiding wall reflections that degrade clarity.

An elastic body mediates vibration transmission between a speaker drive unit and diaphragm, blocking unwanted motions to secure sound volume.

Integral annular plane parts align the sub dome concentrically with the center dome, eliminating special jigs and reducing assembly time.

A coaxial speaker design shares a magnetic circuit unit and frame between first and second sound-producing units.

Suspended bent parts of the diaphragm folded ring maintain arc width while expanding the vibration area, avoiding suspension nonlinearity.

Piezoelectric ceramic elements mounted on a shared frame generate sound and vibration prompts simultaneously, eliminating micromotor volume constraints.

A perforated metal grid dissipates pressurized fluid energy to protect the microphone sensitive area from physical impact.

A vibrating element moves a display panel to generate sound waves while a sensor detects user ear placement.

A multipole engine array loudspeaker uses an annular magnetic field to drive a membrane uniformly.

Dynamic audio mode switching prevents speaker interference in mobile terminals by adjusting operation modes according to detected use states.

A coaxial speaker uses three vibrating diaphragms to counteract sound waves in the far field.

An extension portion of the flexible circuit board engages the voice coil side surface to prevent disconnection during large amplitude swings.

A dual-diaphragm speaker design separates front and rear acoustic paths to enhance low-frequency sensitivity.

A lead-free piezoelectric composition uses a bonded buffer material between distinct layers to enhance piezoelectric characteristics.

Dual grooves on a speaker yoke bottom wall expand anaerobic adhesive contact area to prevent magnet detachment during device drops.

A speaker unit integrates a pressure adjusting body directly onto the magnetic circuit or frame using adhesive to enhance bass sound reproduction.

A loudspeaker motion sensor detects user taps via a trigger detector module, reducing power consumption by eliminating DC bias requirements.

A composite basket assembly couples a metal portion to a plastic portion with an embedded conductive member.

A vibration motor uses a cantilever to elastically connect the driving unit to the frame.