Acoustic echo cancellation in an integrated audio and telecommun

Acoustic echo canceller with fast volume control compensation

Acoustical echo canceller having an adaptive filter with passage

Acoustical echo canceller with sub-band filtering

Active impedance line feed circuit

Adaptive echo cancellation and equalization system signal proces

Adaptive echo cancellation apparatus

Adaptive echo cancellation method

Adaptive echo cancellation method and device for implementing sa

Adaptive echo canceller

Adaptive echo canceller with sparse dynamically positioned taps

Adaptive echo cancelling system for telephony applications

Adaptive filter and echo canceller

Adaptive filter including signal path compensation

Adaptive filter system having mixed fixed point or floating poin

Adaptive filter with coefficient averaging and method

Adaptive filtering method and apparatus employing modified fast

Adaptive sparse echo canceller using a sub-rate filter for activ

Adjustable integrated/discrete-element line current controller i

Analog telephone subscriber terminal apparatus