Speech Analysis TRIZ Cases
- Hearing Aid Terminal with Dynamic Dangerous Sound Detection
A mobile terminal identifies surrounding sound characteristics to determine hearing aid settings.
- Multi-Channel Audio Dropout Concealment via Spectral Filtering
Pre-computed spectral filter coefficients derive substitution signals from error-free channels, concealing wireless audio dropouts with minimal latency.
- Audio Signal Synchronization via Audible Test Patterns
Synchronizes audio signals using audible test patterns to resolve echo removal errors from hardware delays.
- In-Vehicle Voice Relay with Adaptive Noise Cancellation
Adaptive filters update transfer functions to minimize signal error, enabling clear voice relay between passengers listening to different audio sources.
- Contextual Audio Degradation for IVR Robotic Attack Defense
A contextual audio degradation method mixes menu options with background signals to defend against robotic attacks.
- Frequency-Domain Latency Estimation for Audio Echo Cancellation
A frequency-domain latency estimation method aligns audio signals using spectral phase analysis without time-domain correlation filters.
- AMR-WB DTX Synchronization via VAD Flag Signaling
VAD flags signal inactive speech start to AMR-WB decoders, resolving NO_DATA frame misclassification and preserving speech quality.
- Binaural Spatialization Using Decorrelation Cues in Compressed Audio
A binaural spatialization method applies decorrelation cues to compressed audio subbands for accurate two-channel rendering.
- Spatial Audio Repositioning for Scene Differentiation
A spatial audio repositioning apparatus modifies azimuth and elevation metadata to separate overlapping sound sources into distinct angular ranges.
- Watermark Detector Sensitivity via Quality-Based Weighted Decoding
A watermark detection method evaluates individual data sample reliability to merge repetitions using weighted summation.
- Matrix Decoder for Surround Sound with Adaptive Phase Steering
A matrix decoder compensates for human hearing non-linearity using adaptive steering signals to vary amplitude ratios in encoded audio channels.
- Acoustic Feedback Suppression via Frequency-Dependent Gain Attenuation
A signal processing stage identifies frequencies with elevated system gain to apply targeted noise attenuation factors.
- Audio Encoder Noise Reduction via Joint LPC Analysis Filter
Joint encoder reduces computational complexity and algorithmic delay by merging noise reduction with linear prediction analysis in a single time-domain filter.
- Adaptive Audio Encoding Mode Selection
An adaptive audio encoding apparatus selects time-based or frequency-based modes for distinct signal bands.
- Neural Network High Frequency Audio Reconstruction
Generative neural network reconstructs high-band audio samples in filter bank domain, reducing single sideband distortion and metallic artifacts.
- Vocal Artifact Detection Using Envelope Followers
Envelope followers analyze amplitude ratios across frequency bands to detect plosive artifacts, enabling automatic attenuation without manual configuration.