A Class of Sparseness-Controlled Algorithms for Echo Cancellation
نویسندگان
چکیده
منابع مشابه
Sparseness-controlled Adaptive Algorithms for Echo Cancellation
In hands-free telephony, the acoustic coupling between the loudspeaker and the microphone generates echoes that can seriously degrade user experience. For this reason, effective Acoustic echo cancellation (AEC) is important to maintaining and improving the perceived voice quality of a call. Traditionally, adaptive filters have been deployed in acoustic echo cancellers to estimate the Acoustic i...
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In order to reduce the steady-state misalignment of real-coefficient proportionate affine projection sign algorithm (RP-APSA) for sparse impulse responses, a memory RP-APSA is proposed in this paper by exploiting the historical values of proportionate factors, called MP-APSA. Further, to improve the robustness of MP-APSA and the recently proposed memory-improved RP-APSA (MIP-APSA) for impulse r...
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The cancellation of echoes is a vital component of telephony networks. In some cases the echo response that must be identified by the echo canceller is sparse, as for example when telephony traffic is routed over networks with unknown delay such as packet-switched networks. The sparse nature of such a response causes standard adaptive algorithms including normalized LMS to perform poorly. This ...
متن کاملSparseness-Controlled Affine Projection Algorithm for Echo Cancelation
Affine projection algorithms (APAs) are popular in echo cancellation due to its fast convergence. Proportionate APA (PAPA) and improved APAP (IPAPA) have been proposed recently to enhance the performance of APAs based on the concept of assigning different effective step-sizes to the tap coefficients. Conventional IPAPA is found to be able to outperform PAPA by using a proper control parameter. ...
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This paper presents the comparison between different adaptive algorithms usages in acoustic echo cancellation. This comparison includes the cancellation of echo generated in room using different adaptive algorithms Least Mean Square (LMS), Normalized Least Mean Square (NLMS), Improved Proportionate Normalized Least Mean Square (IPNLMS) and Recursive Least Squares (RLS) Algorithms. The goal of t...
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ژورنال
عنوان ژورنال: IEEE Transactions on Audio, Speech, and Language Processing
سال: 2009
ISSN: 1558-7916
DOI: 10.1109/tasl.2009.2025903