Signal Processing TRIZ Cases

A microphone array isolates verbal commands from heavy machinery noise, enabling clear operator communication inside enclosed compartments.

A headphone system segregates audio signals into frequency ranges using a diaphragm-less driver for low frequencies and a standard driver for higher bands.

A lighting control system adjusts illumination to reduce ambient noise levels.

Dynamic reference thresholds adapt to varying gap sizes between the terminal and wearer, ensuring accurate sound source direction determination.

A non-uniform microphone array divides acoustic signals into frequency bands to perform targeted beamforming.

A hearing instrument uses its built-in microphone to measure acoustic transfer functions for real ear calibration.

A direction finder adjusts a forward filter based on sound arrival angle to cancel ambient noise using external microphones.

A dispatch system computes confidence scores from distributed microphones to route audio signals, eliminating redundant responses across multiple devices.

A pressure sensing transducer detects acoustic port obstruction, allowing the controller to adjust audio amplitude and frequency to reduce power consumption.

A binaural hearing system decomposes beamformer signals into magnitude and phase components to restore spatial cues.

A speaker doubles as a microphone to capture ambient noise via a switching circuit, reducing component count while maintaining signal-to-noise ratio.

Audio amplification device uses separate bass and pitch rocker switches to independently bias frequency responses for hearing aids.

Microphone units generate beam formed audio signals and metadata to isolate individual speakers, reducing crosstalk and power consumption.

A mobile computing system analyzes sound data to detect unsafe noise conditions and generates alerts.

Audio processing circuit splits signals so a piezoelectric actuator handles high frequencies while a speaker produces low-frequency sounds.

A psychoacoustic apparatus mixes harmonically related frequencies to increase perceived volume at predetermined targets.

Normalizing audio signal loudness before machine learning processing improves sound source separation performance while maintaining original acoustic ratios.

A bank of paired bandpass and attenuating equalizing filters limits selected frequencies to reduce distortion while maintaining time-domain processing.

A signal processing apparatus detects target sound intervals using sensor signals from mobile bodies.

Earbuds with pressure sensors dynamically adjust volume levels based on detected ear size, resolving frequency response inconsistencies across different users.

A sound-source separation method adjusts input signals using phase difference calculation to emphasize target direction.

A sound field reproduction apparatus generates synthesizing parameters from listener position to drive wave front synthesis across an array speaker.

Earphones determine configuration parameters by transmitting detection signals and receiving reflection signals from the user's ear structure.

A multimedia auditory augmentation system divides audio signals into frequency bands and maps them to tactile emitters for skin-based perception.

A signal processor adjusts acoustic gain functions based on direction of arrival and visual image parameters to control spatial sound reproduction.

Replacing mechanical vibration contact with airborne acoustic waves, this system alleviates symptoms through targeted sound frequency output.

Self-service hearing tests on consumer devices generate personalized audio profiles, eliminating costly audiologist visits and device compatibility issues.

A binaural ear level audio system uses frequency-dependent parameters to control monaural and binaural beamforming signals for personalized spatial processing.

Electronic apparatus adjusts voice recognition output states based on detected ambient noise types.

Prioritizes feedback threshold determination across frequency bands to minimize measurement repetition and ensure accurate gain settings.

Spectral envelope warping translates high-frequency energy to lower bands while preserving natural pitch and reducing distortion artifacts.

Digital signal processing corrects level and phase differences between non-directional microphone units.

Controller detects speaker non-linearities and overexcursion by comparing output to input signals, adjusting gain and bandwidth to prevent damage.

A control unit limits high-frequency speaker drive signals using a variable filter based on integrated sound levels.

A beamforming method using maximum likelihood estimation to optimize spatial filters.

An adaptive network transforms untransformed ambisonic coefficients to generate modified soundfields with improved signal-to-noise ratios.

Outer shell placement of the loudspeaker module protects electronics from moisture and heat while a seal member maintains acoustic isolation.

Segmenting microphone signals into frequency bins enables gamma-distribution filtering that removes disk drive noise while preserving voice commands.

Audio system generates sound information representing surrounding situations through vehicle speakers.

Embedded processors enforce stored policies on incoming audio streams, blocking malware while preserving signal fidelity across any connected device.

A vehicle communication system correlates microphone acoustic input with safety belt vibration signals to identify the speech origin of a seated occupant.

An equalization filter compensates frequency response differences between hearing device filter bank channels.

A hearing aid configuration method uses psychoacoustically leveled test signals to adjust amplification factors per frequency band.

A volume control interface adapts its layout based on content playback status to manage sound levels.

Parallel detector engines generate weighted enhanced streams to resolve the contradiction between high detection precision and manageable processing complexity.

A time-and frequency-varying matrix processes multi-microphone input signals to generate multi-channel soundfield outputs.

A headphone-type acoustic apparatus uses sensors to detect mounting states and automatically adjusts audio output between personal listening and public speaker modes.

A thermal model system predicts voice coil temperature and cone excursion in real-time to enable precise loudspeaker limiting.

A mobile terminal sound output circuit uses a switch to route signals between amplifiers for hearing aid compatibility.

A hearing aid fitting method adjusts amplification based on signal start rise time to improve temporal resolution.