Frequency/Directions Obtaining Arrangements TRIZ Cases
- Mechanical Frequency Upconverter for Battery-Free Acoustic Tags
Animal movement drives a magnetic membrane upconverter to emit higher-frequency acoustic pulses, enabling smaller tracking tags without batteries.
- Open-Ear Ear Hook Geometry for Stable Sound Positioning
A curved, variable-section ear hook keeps the speaker near the ear canal without blocking it, improving fit, stability, and ambient sound awareness.
- Sound Beam Visualization in MR for Precise Speaker Alignment
MR-based sound beam imaging makes invisible speaker beam paths visible, helping users align acoustic output more accurately.
- Radial Vibration Membrane Loudspeaker for Clearer Low-Frequency Sound
Radial second vibration membranes and spacing portions widen sound paths, strengthen low frequencies, and reduce echo in a compact loudspeaker.
- Piezoelectric Transducer Pressure Control for Stable Film Displacement
Maintaining pressure in the sealed gap keeps vibration film displacement stable, reduces resonance, and preserves air flow in a piezoelectric transducer.
- Display Speaker Waveguide for Destructive Interference Control
Path-changing waveguide sections extend the sound path in slim displays to reduce destructive interference and smooth frequency response.
- Folded-Ring Speaker Venting for Back Pressure Relief
Asymmetric bracket air holes route rear diaphragm sound to a pressure relief hole, easing back pressure and improving speaker output.
- Directional Audio Rendering With Predicted Source Arrangements
Precomputed directional audio streams for predicted positions cut head-tracked 3D audio delay and reduce processing load on portable devices.
- Coaxial Loudspeaker Horn Shape for Smoother Tweeter Response
A Bezier-profile horn guides tweeter sound forward to reduce woofer interference and smooth high-frequency response.
- Dual-Cavity Acoustic Structure for Sound Leakage Control
Adjacent pressure relief and sound modulation holes help balance bone- and air-conduction sound while reducing leakage and debris entry.
- Acoustic Output Assembly With Short Sound Channel and Low Leakage
A short sound-guiding channel and Helmholtz resonator improve sound quality while reducing leakage in a compact acoustic output assembly.
- Bone-Air Conduction Headphone Housing for Low-Leakage Audio
A hybrid bone- and air-conduction housing uses shared vibration paths to improve low-frequency sound while reducing leakage.
- Integrated Speaker Structure With Hollow Magnetic Circuit Cavity
A hollow magnetic circuit and isolating member create a middle cavity that expands rear acoustic volume for better low-frequency sound.
- Tuned Acoustic Horn Absorbers for Resonance Distortion Reduction
Tuned absorbers placed between the transducer and horn absorb resonances, cutting distortion and widening usable loudspeaker bandwidth.
- Open Earphone Acoustic Structure for Low Sound Leakage
A cavity-guided sound outlet keeps the ear canal open while improving audio delivery and reducing far-field leakage for safer listening.
- Open-Ear Earphone Housing Layout for Sound Output Without Canal Blockage
A housing outlet ratio and ear-hook placement keep the ear canal open while improving sound guidance and reducing far-field leakage.
- Acoustic Conduit Geometry for Better Sound Transmission in Electronics
A widening acoustic conduit near the acoustic hole improves sound propagation and sound quality in compact electronic housings.
- Directional Loudspeaker Using Horn and Interference Across Frequencies
Combining horn directivity at higher frequencies with front-rear wave interference helps a loudspeaker stay directional across a wider range.
- Directional Loudspeaker Using Horn and Wave Interference
Combining horn loading for higher frequencies with front-rear wave cancellation, this loudspeaker keeps directivity across a wide audio range.