Signal Processing TRIZ Cases

Directional vehicle alerts adapt loudness and projection to path intersections and urban noise, improving pedestrian warning localization.

An in-vehicle processor relays user volume changes to a communications unit, letting emergency call audio be adjusted through the vehicle interface.

A docked TV remote uses external power for beamformed far-field microphones, then switches to battery push-to-talk mode when handheld.

Noise-based equalizer switching raises in-car speech volume while preserving natural sound and suppressing speaker-microphone howling.

Synthetic engine noise is reduced during steady driving to preserve driver feedback while limiting cabin noise fatigue.

Cornering-state analysis uses tire slip and road contact forces to generate recognizable EV turning sounds without cowl vibration issues.

Predicted motion shifts sound-image position and volume so drivers can identify nearby hazards earlier without audio overload.

A microcontroller and DSP shift excess amplifier power between speaker channels, enabling unequal allocation for better balance and efficiency.

Relative user positioning selects target vehicle speakers and channels to create adaptive outdoor stereo sound without powering all speakers.

Dedicated TI/HWL audio channels prevent tone mixing with other alerts, keeping turn indicator sounds consistent and less annoying.

Automatic audio zone profiles adjust speaker output by driving mode, improving in-vehicle listening and cross-system interoperability.

A single cabin control adjusts sound level and repetition to create more varied, mood-changing vehicle audio without adding interface complexity.

Timestamped master-slave synchronization aligns sirens and light bars, reducing ambiguous alerts and improving driver response.

RPM-synced Shepard tone control keeps virtual engine sound aligned with driving conditions while preserving continuous acceleration feel.

A Shepard tone generator adapts engine sound to RPM, throttle, and acceleration, keeping EV feedback responsive without harsh high-speed pitch.

Matching acoustic and vibration signatures to known theft patterns improves vehicle theft detection accuracy without relying on raw sensor analysis.

Overlapping left-right volume sequencing in headlight loudspeakers helps pedestrians localize a quiet vehicle's turning direction.

Dynamic per-channel gain control and shared power allocation help cinema amplifiers handle immersive audio loads, faults, and booth space limits.

Separated instrument tracks are routed by passenger emotion and seat position to speakers and vibration seats for personalized in-vehicle relaxation.

Microphone arrays, bandpass filtering, and Bayesian tracking help vehicles detect sirens and localize emergency vehicles for safer path planning.

Cabin microphone feedback adjusts synthesized engine noise to stay audible and realistic under changing vehicle background noise.