Sound Producing Devices TRIZ Cases

An asymmetrical dual-entrant acoustic horn uses diffraction slots to control radiation patterns across varying audience regions.

Segmented nozzle-chamber cells reduce high-frequency noise while minimizing structural weight and complexity.

Nested folded horns maintain long acoustic paths to resolve the trade-off between low-frequency efficiency and large enclosure volume.

A sound output device segments audio playback and call signals to one ear while delivering masking noise to the other ear based on object detection.

Optimized shoulder and crown dimensions harmonize frequencies, resolving the contradiction between smaller size and audible loudness.

Vertical plunger motion pivots an L-shaped lever to release a hammer head, reducing apparatus dimensions while preserving acoustic quality.

A virtual audio simulation method mirrors sources to calculate reflected paths.

Controller adjusts actuating force on acoustic black hole to improve low-frequency vibration attenuation.

An artificial reverberator adjusts room impulse response decay rates to modify perceived acoustic space volume.

Oversampling and programmable filtering reduce transmission latency in active noise cancellation systems, ensuring timely signal synchronization.

Machine learning clusters select digital signal processing coefficients to adjust speaker equalization profiles.

Varying unit cell neck widths enable a lambda-twentieth thick diffuser that resolves the contradiction between minimal profile and reliable acoustic diffusion.

A VR manager predicts user motion and identifies required physical space to prevent collisions in shared environments.

A minimum phase pre-shaping filter boosts low frequency gain before the adaptive stage to extend active noise cancellation bandwidth.

Digital signal processor integrates 3D spatial audio processing and active noise control for immersive sound playback.

Osteophonic transducers convert sound signals into vibratory signals transmitted via bone conduction to the auditory nerve.

Analog sub-beam forming reduces digital processing load and signal connections while maintaining beam forming capability.

Iterative room mirroring determines virtual sound sources to prevent duplicates and reduce computational complexity in early reflection modeling.

Periodic unit cell array with elastic membranes and lossy porous media dissipates acoustic energy across a wide frequency range.

An extruded aluminum chassis shields sonar transducer arrays using a die-formed structural design.

Movable acoustic lens members adjust sound distribution to resolve the trade-off between device complexity and precise vertical focusing.

A one-way sound transmission structure uses asymmetric resonator spacing to enable directional acoustic control via interference.

A sound IC determines oscillation frequency using a single tone-set resistor to generate audio control signals for an electric switch.

Dynamic parameter adjustment resolves the tradeoff between effective noise suppression and artifact generation in spatial audio capture systems.

A coefficient control block gradually increments adaptive filter coefficients from initial to final values during a reset cycle.

Adjustable flap in loudspeaker expansion guide concentrates sound energy density to reduce acoustic delays and reflections in closed spaces.

Dielectric elastomer layers generate sound waves across a photonic crystal display panel.

A three-dimensional air adsorbing and sound absorbing structure uses open-celled foam coupled with an air-adsorbing material to increase apparent volume.

Visual odometry corrects sonar image viewpoints using optical flow algorithms, maintaining navigational accuracy when GPS signals drop out.

Radial lobe gaps redirect sound waves outward, resolving uneven coverage and weather exposure in public speaker systems.

A combined reference signal generation unit applies multiple filters to input reference signals and sums them into a single composite signal.

A sound absorption apparatus uses a diaphragm and supporting member to absorb acoustic energy across a wide frequency band.

Inaudible noise bursts drive secondary path adaptive filter updates, maintaining cancellation accuracy when source audio is absent or low amplitude.

A constrained membrane acoustic metamaterial suppresses undesirable vibration modes using structural constraint sticks to broaden sound insulation bandwidth.

A noise reduction system switches between control and measurement modes to generate adaptive filters using path characteristics.

A sound insulation panel uses compact and expanded polyurethane layers to absorb acoustic energy.

An earmuff system uses active noise cancellation and an external microphone to reduce wind noise without muffling important sounds like sirens.

An integrated motion detector uses audio speakers and microphones to measure residual echo changes for movement sensing.

A hydrophone matrix correlates temporal sound shifts to localize submarine noise while separating object signals from environmental interference.

An active noise cancellation system adapts filter coefficients via atmospheric pressure sensing to prevent instability during altitude changes.

Solid core acoustic reflector eliminates toxic fluid leakage and aspect-dependent reflectivity by focusing waves through a spherical shell.

A sound reproducing apparatus mixes hear-through processing and noise cancellation to output external environmental sounds alongside internal audio content.

Dynamic psychoacoustic masking signals reduce specific rotary equipment noise above 300 Hz where active cancellation fails.

A noise reduction apparatus employs feed-forward control with adaptive filtering to generate anti-phase sound waves for acoustic cancellation.

Segmented isolator body with resilient members filters acoustic signals, reducing tool-body interference for accurate formation measurements.

Sonar transducer arrays vary frequency to beamform multiple return beams, reducing hardware complexity while maintaining high-definition underwater imaging.

Reproduction control method mixes acoustic signals from multiple terminals to generate mixed sound, resolving performer isolation in remote viewing.

An information processing device guides user head orientation via visual cues for accurate measurement.

Wireless reference audio data enables targeted cancellation of specific broadcast sources, reducing distractions in noisy environments.