Signal Processing TRIZ Cases
- Multi-Carrier Auditory Prosthetic Processing for Speech Recognition
A multi-carrier processing method adjusts carrier amplitudes based on identified audio signals to deliver temporal fine structure information.
- De-mixing Filter Selection for Multi-Speaker Audio Separation
Pre-computed de-mixing filters selected by speaker position separate simultaneous speech without re-training delays or high computational load.
- Acoustic Liquid Discharge via Fixed Frequency Varying Pressure
A sound output device generates acoustic radiation pressure using fixed center frequencies and varying sound pressures to remove liquid from an acoustic conduit.
- Bluetooth Speaker Ring Network Synchronization
A Bluetooth speaker ring network distributes audio via a ringleader mechanism to resolve synchronization complexity across multiple devices.
- Audio Output Device Biometric User Coordination
An audio output device uses biometric sensors to detect user presence and determine operation modes.
- Active Sound Effect Device Velocity-Based Frequency Shifting
A vehicle sound effect device adjusts acoustic frequencies using a velocity-based setting unit to generate natural audio signals.
- Terminal Sound Production Using Sensor-Based Distortion Compensation
A terminal extracts sound directions using acceleration and gyro sensors to produce stereophonic audio.
- Sound Collecting Apparatus Frequency Band Correlation Detection
A sound collecting apparatus divides microphone signals into frequency bands to calculate correlation values for accurate state detection.
- Non-Speech Audio Signal Recognition in Electronic Devices
Separate processing paths resolve the contradiction between speech recognition accuracy and non-speech signal versatility, enabling precise command execution.
- Audio Streaming Bandwidth Adjustment for Volume Conditions
A processor detects low-volume conditions in audio streams and requests reduced bandwidth from the source.
- Microphone Array Optimal Pickup Pattern Selection
A microphone array selects an optimal pickup pattern from predefined options using audio signal analysis.
- Binaural Correction Factor Calculation for Hearing Prosthesis Fitting
Computing device determines binaural correction factors from monaural and binaural threshold intensities to adjust hearing prosthesis stimulus settings.
- Hearing Earphone Self-Fitting via Inner Ear Microphone Calibration
A hearing earphone adjusts frequency gain using an inner ear microphone to capture acoustic feedback during pure tone playback.
- Vehicle Speech Signal Interference Reduction via Sparse Segmented Beamforming
Segmenting vehicle speech signals enables sparse generalized sidelobe cancellation that suppresses interference without cancelling the target signal.