Loudspeakers TRIZ Cases

Metal electrodes with anti-oxidation layers help thin piezoelectric sound generators improve sound output while resisting fragility and oxidation.

A shared magnetic circuit lets audio and vibration coils work independently while cutting thickness, volume, and magnetic interference.

A tapered pressure relief hole layout keeps airflow through the housing while reducing near-field sound leakage and acoustic short-circuits.

Using the concha cavity as a reflection wall, this clip earphone boosts volume and sound quality without blocking the ear canal.

A folded ring elastic element and hollow reinforcing member create multiple audible resonance peaks to widen bandwidth and raise sound pressure.

Three spaced voice coils and multiple domes stiffen the diaphragm, preventing split vibration and improving acoustic performance.

Injection-molded integration of a vent membrane and frame simplifies speaker assembly while preserving waterproofing and diaphragm vibration.

Opposing forces from main and auxiliary voice coils cut shell vibration while inner supports and elastic members stabilize the magnetic circuit.

Dampers buffered between the sound-generating unit and magnetic member cut vibration transfer while the assembly frame speeds loudspeaker mounting.

A shared magnetic circuit combines speaker output and vibration feedback in one module, cutting installation space and freeing room for battery capacity.

An elastic-linked vibration structure boosts piezoelectric speaker sound pressure while reducing peak-dip width and improving low-frequency accuracy.

A paraboloid reflector and ultrasonic absorber collect self-demodulated audible sound near the user while limiting harmful ultrasonic radiation.

An annular connecting member boosts edge-to-frame adhesion strength in compact speaker assemblies while preserving diaphragm area and ventilation.

Integral molding of the dome and suspension with positioning holes improves diaphragm concentricity, avoids glue defects, and boosts reliability.

A fixed diaphragm center and vibrating outer ring create speaker space savings, helping thinner displays maintain sound output.

An edge-tapped air path redirects pressure waves from the diaphragm edge to a central exit, widening microspeaker response to 400 Hz-50 kHz.

Varying radial chord lengths in an elliptical tweeter diaphragm split strong resonances into weaker modes for smoother frequency response.

A parabolic reflector and ultrasonic absorber concentrate self-demodulated audible sound near the user while limiting stray ultrasonic radiation.

A sealed in-canal transducer delivers both air-conducted sound and bone-conducted vibration while blocking earwax, liquid, dust, and discharge.

A single-layer pair of piezoelectric structures drives two diaphragms to cut speaker thickness and weight without losing driving performance.

Different cantilever lengths stagger vibration modes to reduce peaks and valleys, giving piezoelectric loudspeakers flatter response.

An inner upper magnetic conductor concentrates flux at the voice coil, boosting tweeter efficiency and high-frequency output without enlarging size.

Electrical drive-signal measurement verifies piezoelectric transducer operation in drug delivery devices without microphones or ambient-noise issues.

A dampening adhesive or semisolid around the voice coil wire cuts resonant deflection, reducing fatigue damage while preserving acoustic output.

An upper plate with frame-fixed projections reinforces the speaker short axis, protects the magnet on drops, and supports thinner designs.

Separate sound paths and phased wave cancellation reduce phone call sound leakage while preserving a hole-free display-side appearance.

Multiple magnetic gaps and segmented voice coils extend speaker stroke while preserving driving force and reducing power loss.

Different electrostatic forces on a vibration diaphragm steer sound toward a focus point, improving integrated display audio without external speakers.

Opposite-flux magnetic gaps and switched voice coils extend speaker stroke without wider windings, preserving drive force and lowering power use.

Stacked resonance chambers guide airflow through a compact acoustic path to raise SPL by 5-7 dB in wearable sound devices.

An elastic polymer member damps resonance and off-axis vibration in a bone conduction transducer, reducing abnormal noise and stabilizing output.

Tactile vibrations at the deaf ear add directional cues to bone-conducted sound, improving localization and speech understanding in noise.

A dual-diaphragm magnetic circuit cuts vibration mass and asymmetric drive, improving transient behavior and high-frequency sound quality.

A mass-and-elastic resonance assembly absorbs low-frequency vibration energy to cut sound leakage and improve bone conduction comfort.

A concealed non-coplanar diaphragm connection cuts air leakage between cavities, raising acoustic resistance and low-frequency sound pressure.

Conductive gel replaces long voice coil wires and FPC links, improving connection stability, magnetic circuit space, and speaker acoustics.

Opposed co-axial diaphragms with coplanar motors cut speaker profile while preserving low-frequency output and canceling vibration.

An edge-tapped air path redirects diaphragm-edge pressure to a central exit, widening microspeaker response and reducing distortion.

Opposing vibration of the magnetic circuit and diaphragm cuts shell vibration while dual-sided sound output improves frequency response sensitivity.