There is provided a noise cancellation system, comprising: an input for a digital signal, the
digital signal having a first sample rate; a digital filter, connected to the input to receive the …

An electroacoustic channel soundfield is altered. An audio signal is applied by an
electromechanical transducer to an acoustic space, causing air pressure changes therein …

US PATENT DOCUMENTS phone signal to the background noise? oor When speech is not
present. For integration With a microphone array, the center 4,039,753 A 8/1977 Balogh et …

(57) ABSTRACT A noise cancellation system, comprising: an input for a digital signal, the
digital signal having a first sample rate; a digital filter, connected to the input to receive the …

The quality and robustness of audio echo cancellation is enhanced by selectively applying
glitch recovery processes based on a quality measurement of the relative offset between …

An apparatus for processing a plurality of real-valued subband signals using a first real-
valued subband signal and a second real-valued subband signal to provide at least a …

A test signal generator provides a test signal to an acoustic device under test and a data
acquisition device acquires data from the acoustic device. The initial frequency response of …

Acoustic echo cancellation, residual echo suppression and sound-source localization/
microphone array processes are combined in a two-way voice communication system that …

Echo removal techniques are described. As part of the echo removal, an adaptive model
estimate of the echo in a received audio signal is determined using an adaptive model …

Abstract Systems (200) and methods (100) for noise error amplitude reduction. The methods
involve configuring a first microphone system (202) and a second microphone system (302) …