Year-end Sale % OFF 
Abstract
A concept of robust adaptive beamforming integrating stereophonic acoustic echo cancellation is presented which reconciles the need for low-computational complexity and efficient adaptive filtering with versatility and robustness in real-world scenarios. The synergetic combination of a robust generalized sidelobe canceller and a stereo acoustic echo canceller is designed in the frequency domain based on a general framework for multichannel adaptive filtering in the frequency domain. Theoretical analysis and real-time experiments show the superiority of this concept over comparable time-domain approaches in terms of computational complexity and adaptation behaviour. The real-time implementation confirms that the concept is robust and meets well the practical requirements of real-world scenarios, which makes it a promising candidate for commercial products.
Highlights
With a continuously increasing desire for convenient human-machine interaction, the acoustic interface of any terminal for multimedia or telecommunication services is challenged to allow seamless, hands-free, and untethered audio communication for the benefit of human users.Audio capture is usually responsible for extracting desired signals for the multimedia device or, in telecommunication applications, for remote listeners
A concept of robust adaptive beamforming integrating stereophonic acoustic echo cancellation is presented which reconciles the need for low-computational complexity and efficient adaptive filtering with versatility and robustness in real-world scenarios
It consists of a fixed-reference path, which is formed by a fixed beamformer (FBF), and an adaptive sidelobe-cancelling path with the adaptive blocking matrix (ABM) and the adaptive interference canceller (AIC)
Summary
With a continuously increasing desire for convenient human-machine interaction, the acoustic interface of any terminal for multimedia or telecommunication services is challenged to allow seamless, hands-free, and untethered audio communication for the benefit of human users. Robust adaptive beamforming algorithms are necessary to cope with time-varying acoustic environments including moving desired sources. A RGSC was presented in [8] that explicitly takes the time-variance of the desired source position into account, which enhances robustness against desired signal cancellation compared to conventional GSCs. we describe the RGSC algorithm (see Figure 2). We describe the RGSC algorithm (see Figure 2) It consists of a fixed-reference path, which is formed by a fixed beamformer (FBF), and an adaptive sidelobe-cancelling path with the adaptive blocking matrix (ABM) and the adaptive interference canceller (AIC). These building blocks are described in the discrete time domain in Sections 2.1, 2.2, and 2.3.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
