Signal Processing TRIZ Cases

Audio signal analyser synchronizes with air pressure change determiner to differentiate accidental from intentional glass break, reducing false alarms.

A microphone and loudspeaker array system detects terminal positions to set directivity characteristics for precise audio reproduction.

A terminal device acquires sound source amplitude information to determine audio type and apply specific volume adjustment parameters.

Camera-detected gestures activate external speakers to broadcast voice, enabling secure communication without opening windows.

Audio sensors detect non-ambient sounds to guide collision avoidance, enabling machines to identify obstacles around corners or behind objects.

An audio output device uses a coaxial FM antenna structure to isolate signals from digital ground noise.

An imaging device captures spatial geometry to calculate acoustic correction coefficients for speaker output.

A vehicle information presentation device uses multiple sound sources to emit directional audio signals toward the occupant.

Steerable speaker units adjust propagation angles to isolate sound paths, reducing unwanted acoustic spread in shared environments.

An AI earbud system generates personalized audio settings by analyzing user physiological responses and environmental data in real time.

Segments voice input into local trigger detection and cloud analysis to reduce network consumption while maintaining high accuracy.

A dichotic hearing aid device activates signal processing based on formant power ratios to enhance audio clarity.

A haptic algorithm processes audio streams to activate voice coils and vibrating motors based on frequency band energy levels.

A correlation function generation apparatus calculates cross-spectrum variance to weight frequency components and produce a clear peak.

A wearable audio interface displays visual indicators for active output modes to simplify user selection.

A software application reconfigures multichannel audio input streams to match available speaker output channels.

A vehicle direction identification device analyzes sound phases to determine source location.

Correlating audio signals via neural networks determines detector distances, resolving spillover and hijacking errors in audience measurement.

A hearing device uses a noise covariance matrix to optimize beamformer filtering weights.

Audio data modification using RF signal characteristics resolves wireless transmission limitations by enabling accurate spatial audio reproduction.

Wearable computing system displays visual arrows for sound direction and intensity meters.

Neural network processing reduces spectrum differences from beamforming algorithms, improving sound quality and speech intelligibility.

A dual microphone sound playback device processes phase differences to determine sound source direction and adjust low-frequency volume.

Segmenting the acoustic signal into frequency components allows electronic devices to decode location data despite environmental interference.

A multimedia player tracks earphone usage time via a distance detector signal to prompt users.

Spatial masks define pass regions for beamforming filters to localize acoustic sources, reducing computational complexity in complex environments.

A direction of arrival estimator combines beamformer outputs with generalized cross-correlation to enhance signal quality.

An audio processing device detects speaker locations via positioning signals to adjust output content.

Sound sensor arrays detect cart movements to determine locations, resolving manual tracking precision limits.

Deep neural networks classify audio features to identify the closest device without inter-device synchronization.

Removable earpiece system switches between bone conduction, in-ear, and over-ear modes to balance listening comfort with ambient noise safety.

A controller generates an audio test signal with pink, white, and red noise spectra to measure device characteristics.

A hearing prosthesis fitting system identifies feedback frequency bands and aggregates path information during the fitting session.

A sound playing device manages wireless connections by distinguishing between audio and data transmission paths using separate detection modules.

Automated filter calibration resolves manual triggering bottlenecks by analyzing audio signals to equalize long-term spectrum across multiple microphones.

Adaptive filters isolate audio components within multi-channel soundfields to integrate auxiliary microphone signals with precise spatial alignment.

Segmenting audio into fixed ambient and movable effect channels resolves the trade-off between system stability and immersive presence.

Amplitude modulated noise replaces audio signal portions to enhance speech audibility in hearing devices.

Crosstalk cancellation circuitry generates adaptive signals to drive speakers in compact audio devices.

A trained model obtains sound volume adjustment parameters for multiple performers to adjust and mix audio signals.

Gain redistribution subsystem adjusts microphone amplification to mitigate near field noise in head-worn audio systems.

An audio countering system generates inverted phase signals to cancel speaker output and isolate voice commands.

Base unit detects receiver type using grounded or floating electrical contacts to apply specific audio filters.

Spatially-selective microphone detection beams suppress co-talker speech interference to improve speech recognition accuracy.

Updating directional transfer function pairs based on head movement to improve spatial accuracy while reducing computational complexity.

A sound reproduction device uses a counter circuit to verify abnormality detection signals before stopping audio output.

Transmitting separate wireless audio streams from each earpiece to receiving devices.

Asymmetric windowing combined with higher transposition factors cuts virtual bass latency from 3200 to 640 samples for real-time audio.

Applies non-uniform spectral weighting to cross-correlation calculations, reducing broadband noise sensitivity while maintaining TDOA estimation accuracy.