Sound Producing Devices TRIZ Cases
- Split-Aperture Sonar Beamforming for 3D Position Accuracy
Subdividing raw data into slices allows a sonar system to correct beam positions via split-aperture phase comparison, resolving high incidence angle errors.
- Noise Controller with Effect Measuring Unit for Target Noise Isolation
A noise controller uses an effect measuring unit to isolate target noise reduction from non-target interference.
- Audio Signal Processing Apparatus Dynamic Channel Contribution
An audio signal processing apparatus dynamically adjusts channel contribution rates based on sound source position information.
- Active Anti-Noise System for Well Operations
Active anti-noise generators use sensors and processors to create destructive interference, reducing far-field noise without large physical barriers.
- Adaptive Speaker Selection for Active Noise Control
An active noise control system dynamically selects speaker groups to generate anti-noise signals.
- Fan Noise Cancellation via Active Anti-Noise Signals
Active noise cancellation controller drives a micro speaker to generate anti-noise signals that counteract fan-generated acoustic disturbances.
- Adaptive Noise Control Using Variable Actuator Participation
Dynamic sensor weighting resolves the contradiction between adaptability and system complexity.
- Virtual Audio System Tuning via Recorded Transfer Functions
A virtual audio system tuning method processes signals through recorded transfer functions to simulate acoustic environments.
- Analog Beamformer Phase Shifting Network Without Inductors
RC phase shifting network aligns analog RF signals for beamforming, eliminating bulky inductors to reduce power consumption and ASIC area.
- Acoustic Waveguiding via Velocity Mismatch in Integrated Devices
A cladding layer confines acoustic waves to the core using acoustic reflection at interfaces between solids with dissimilar velocities.
- Low Drag Dipping Sonar Cable Dynamics
Variable cross-section cable minimizes drag force while maintaining tensile strength for deeper detection.
- Audio Alarm System Reducing Crest Factor for Power Efficiency
Audio alarm system minimizes crest factor through phase control, reducing amplifier power consumption while maintaining audibility.
- Adaptive Transducer Calibration for Road Noise Attenuation
Variable filter coefficients update via microphone feedback to maintain noise cancellation performance despite transducer transfer function changes.
- Yacht Noise Cancellation Using Segmented Adaptive Filtering
A yacht noise cancellation system uses segmented adaptive filtering to generate anti-noise signals for precise acoustic interference.
- Audio Noise Reduction via Sub-band Segmentation and Energy Thresholding
A noise reduction system decomposes audio signals into sub-bands to attenuate noise elements based on local signal energy values.