Signal Processing TRIZ Cases

Inverse noise cancellation reduces ambient decibel levels in a neckband device, resolving the trade-off between user safety and environmental awareness.

Multi-channel speaker arrays spatialize acoustic notifications to help pedestrians localize vehicle sources.

A master audio device manages data distribution within a group of connected units.

Adjusting send levels for specific microphone-speaker pairs reduces howling while maintaining clear voice output for other talkers.

Rotatable outer ring adjusts speaker volume via rotational sensor detection, resolving lack of intuitive physical controls for teleconferencing users.

Automated speech-based assessment replaces professional audiograms, enabling self-customization while maintaining precise hearing threshold measurement.

A signal processing device compensates clipped microphone signals using non-clipped reference data to maintain audio fidelity.

A hearing device uses a wireless radio receiver to determine network location and establish an automatic sound processing profile.

Adaptive cut-off frequency adjusts smoothing intensity to reduce musical noise while preserving speech clarity in hearing aids.

A processor decomposes audio into directional and diffuse components to isolate ambient sound fields.

Quantizing phase difference distributions and comparing them with stored templates reduces calculation load for real-time direction estimation.

An automated system measures ambient noise and dynamically adjusts alerting devices to eliminate manual calibration time and hearing hazards.

A method determines a separated signal modification parameter based on separation success to limit characteristic ranges.

A voiceover device substitutes user audio via an amplifier and muting circuit.

Portable playback devices establish temporary wireless networks to stream synchronized audio content, resolving off-net synchronization bottlenecks.

A single quiet-all input simultaneously mutes multiple vehicle audio sources via a processor-linked user interface.

Beamforming isolates external hazard sounds via microphones, restoring environmental awareness without reducing infotainment immersion.

A processing unit detects output volume and calculates cumulative exposure time to manage sound levels.

A control method adjusts speaker gains to a uniform level based on power supply parameters.

A hearing device processor determines gain values to combine directional input signals from both ears, ensuring equal strength of on-axis and off-axis audio.

Auditory interaction analysis detects emerging hearing issues before significant problems develop, enabling timely intervention.

A vehicle audio system adjusts internal speaker frequency response to complement external portable device output.

An electronic audio mixer synchronizes channels via wireless transmission, eliminating speaker interference and echo in large venues.

A compensation filter adjusts differential beam forming signal amplitude and phase to maintain consistent beam characteristics across varying microphone array specifications.

Segmented sensor arrays calculate collision probabilities to deliver timely warnings, reducing injury risks without adding excessive weight.

A sound processing apparatus interlocks volume and delay panning parameters for consistent audio localization.

A sound pressure gradient microphone uses phase shifting to prevent output dips.

Dynamic volume adjustment reduces sense of difference between simultaneous outputs, ensuring stable immersive audio experience.

Matching DSP buffer sizes and bit rates to communication delays eliminates time-domain conversion lag, reducing processing power consumption.

Time-resolved power analysis predicts audio signal demands, enabling dynamic DSP adjustments that prevent shutdowns in PoE-powered speakers.

A parametric audio processor adjusts ultrasonic signal amplitude based on listener distance to match conventional speaker output levels.

A mobile robot adjusts speaker volume using microphone-detected ambient sound levels to maintain clear audio output.

Two dimensional discrete cosine transforms normalize spectral energy to identify techno music, resolving precision issues in non-melodic genre detection.

A portable calibration system uses a coupler and sensor to measure transducer output levels for audio equipment.

A wireless speaker transceiver establishes a secondary link to sniff data packets from the source.

Segmented audio pathways isolate speech from noise cancellation signals to resolve the trade-off between ambient awareness and effective noise suppression.

Automated mixing resolves manual effort bottlenecks by using processor-based time alignment and position data to enhance spatial positioning.

A signal processing apparatus sets virtual sound sources based on speaker arrangement data to generate reproducing signals.

An audio device uses ultrasound signals to determine source position and direction of arrival for precise spatial processing.

P-ICMV beam former applies ADMM algorithms to process multiple interferences without becoming unsolvable under limited degree of freedom constraints.

Capacitive sensing replaces mechanical switches in headsets, reducing power consumption and improving reliability through proximity detection.

A system synthesizes superposed audio and vibration signals into a single drive output to consolidate connection interfaces.

A control device detects target smart devices by analyzing ambient sound characteristics to process adjustment instructions.

Audio management module detects user position via camera and mobile device to configure speaker frequencies and power levels.

Mechanical connectors link speaker modules while the center module broadcasts audio wirelessly, eliminating synchronization delays common in Bluetooth setups.

Segmenting HRTF processing into independent lateral and vertical components resolves vertical localization errors caused by headphone fitting variability.

A vehicle sound output device adjusts frequency and tone to stimulate the driver's sympathetic nerve.

A common component extractor divides spectra into subbands to calculate similarity degrees for isolating target acoustic objects.

A microphone switches between wide and focused listening modes to capture audio signals accurately.

An audio manager assigns priority status to software applications and configures output devices to emit only selected content.