Hearing Device Active Noise Cancellation TRIZ Cases
- Integrated PBE and ANC for Small-Speaker Bass Reproduction
Virtual bass generation is coordinated with ANC to improve low-frequency audio and cut distortion in headsets with small speakers.
- Biquad Universal Filter With Fewer Pins and External Capacitors
A biquad universal filter uses T-structured input networks and grounded or floating capacitors to cut pin count, external parts, noise, and distortion.
- Coordinated ANC Channel Control for Binaural Earspeakers
Coordinated adaptation across left and right ANC channels helps earspeakers maintain noise cancellation and speech intelligibility as acoustics change.
- Frequency-Domain Audio Noise Reduction With Smoothed Spectral Control
Temporal smoothing of frame-based spectral level control cuts broadband receiver noise while limiting computation, circuit size, and sound degradation.
- ANR Reference Sound Compression for Low-Power Stable Noise Reduction
Dynamic compression of feedforward and feedback reference sounds cuts ANR power use, widens frequency coverage, and limits instability noise.
- Frequency-Domain Audio Processing for Broadband Noise Reduction
Temporal smoothing of frame-based spectral control cuts broadband noise and preserves voice clarity with low computation and stable sound quality.
- Universal Biquad Filter Topology for Low-Pin Noise Cancellation
Grounded and floating capacitor T-networks cut external pins and capacitors while maintaining stable, programmable noise cancellation.
- Dual-Microphone Earphone Noise Processing for Adaptive ANC Modes
Dual microphones and scene-based mode switching balance ANC, hear-through, and power use to optimize earphone audio in real time.
- Neural Network Hearing Aid Audio Path Switching for Noisy Speech
A controller switches between DSP and neural network processing to improve speech clarity in noise with low latency and lower power use.
- Ear Canal Acoustic Cough Detection With Fewer False Positives
Active acoustic sensing in the ear canal detects a user's cough while rejecting nearby cough noise without extra hardware.
- Binaural Room Impulse Response Modeling for AR Headphone Equalization
Measures binaural room impulse responses with headphones worn to preserve spatial cues and separate natural and augmented sound in AR.
- In-Ear Voice Audio Recovery Using Deep Learning Band Reconstruction
A deep learning model rebuilds lost high-frequency voice content from in-ear microphone signals, improving clarity in noisy wearables.
- Hearing Aid Sound Processing With Variable Delay Noise Canceling
Variable delay and noise canceling are tuned to hearing thresholds, reducing echo discomfort while improving speech clarity in noisy settings.
- Hearing Protection Haptic Feedback for Ambient and Device Alerts
Haptic feedback in hearing protection conveys ambient hazards and device status through skin contact, reducing missed signals and collision risk.
- Active Hearing Protection Auto Power Control by Earmuff Insertion
Insertion sensors in each earmuff switch hearing protection on only when both are fitted, reducing battery waste and improving exposure data accuracy.
- Noise-Cancelling Headphone Baffle Layout for Feedback Suppression
Selective acoustic resistance at the sub-dome suppresses high-frequency feedback while preserving low-frequency headphone output.
- ANC Earphone Self-Calibration Case for Consistent Noise Cancellation
A contoured charging case uses a speaker and microphone to recalibrate ANC earphones over time, preserving audio quality and noise cancellation.