Multi-input channel and multi-output channel echo cancellation
Multi-path active hybrid circuit
Noise reduction circuit for telephones
Non-linear echo cancellation in discrete multi-tone systems
Nonlinear echo compensator for class B transmitter line driver
Path change detector for echo cancellation
Portable speakerphone device and subsystem
Process for improving the echo suppression in a...
Quadrature filter augmentation of echo canceler basis functions
Reduced complexity transform-domain adaptive filter using...
Robust adaptive filter for echo cancellation
Robust signed regressor PNLMS method and apparatus for...
Round trip delay estimator and compensator for the echo...
Signal processing
Single-sided subband filters
Stable adaptive filter and method
Stable adaptive filter and method
Statistical adaptive-filter controller
Step size convergence control
Subband echo location and double-talk detection in...