A Subband Adaptive Filter
نویسنده
چکیده
Recently a new real-valued oversampled filter bank has been proposed which reduces the “inband” alias. The filter bank consists of at least three channels which are subsampled by different subsampling ratios. In this paper we investigate into the applicability of this filter bank for adaptive subband filtering and compare the setup with existing subband and fullband techniques.
منابع مشابه
A Family of Variable Step-Size Normalized Subband Adaptive Filter Algorithms Using Statistics of System Impulse Response
This paper presents a new variable step-size normalized subband adaptive filter (VSS-NSAF) algorithm. The proposed algorithm uses the prior knowledge of the system impulse response statistics and the optimal step-size vector is obtained by minimizing the mean-square deviation(MSD). In comparison with NSAF, the VSS-NSAF algorithm has faster convergence speed and lower MSD. To reduce the computa...
متن کاملVibration Suppression of Fuel Sloshing using Subband Adaptive Filtering (RESEARCH NOTE)
One of the main vibration problems of aerospace vehicles with liquid fuel propulsion system is fuel sloshing. This phenomenon is a low frequency vibrational challenge which can affect the motion of the vehicle and degrade the stability of the main control system. In this regards, the motion of the liquid will be very critical when the frequency of the sloshing is very close to the frequencies o...
متن کاملSubband Adaptive Filtering with Real–Valued Subband Signals for Acoustic Echo Cancellation
Adaptive filtering in subbands have originally been proposed to overcome limitations of classic adaptive algorithms in some areas. In general, subband adaptive filters offer computational savings, as well as faster convergence over the classical Least Mean Squared (LMS) algorithm. However, improvements to current subband adaptive filters could be further enhanced by a more elegant choice of the...
متن کاملApplication of subband analysis to adaptive prediction
A closed-loop adaptive subband prediction architecture is presented by employing an adaptive subband filter in the prediction configuration. Some authors have suggested that applying open-loop prediction methods to subband signals can realize increased prediction gain over fullband prediction. Furthermore, the benefits of applying multirate techniques to adaptive filtering are well understood i...
متن کاملDesign of Normalized Subband Adaptive Filter for Acoustic Echo Cancellation
In hands-free telephones and teleconferencing systems, acoustic echo cancellers are required, which are often implemented by adaptive filters. In these applications, the speech input signal of the adaptive filter is highly correlated and the impulse response of the echo path is very long. These characteristics will slow down the convergence rate of the adaptive filter if the well-known normaliz...
متن کامل