Victor Popescu

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The Kalman filter is widely used in many practical applications. In this paper, we motivate the use of a more general form of the Kalman filter in the context of echo cancellation. This algorithm is derived by considering, at each iteration, a block of time samples instead of one time sample as it is the case in the conventional approach. The variance of(More)
The paper considers two efficient improved artificial reverberation algorithms built with an early Schroeder's and a late reverberator: modified Schroeder's or an absorbent all-pass. Both of them simulate the behavior of a real concert hall by taking into account the variation with frequency of the reverberation time. Several reverberation algorithms can be(More)
This paper presents a method for optimizing the transfer function of the channel filter within the Zero-Intermediate Frequency radio receivers of Orthogonal Frequency-Division Multiplexing (OFDM) broadcasts. The method is based on a genetic algorithm (GA) and has several distinctive features: the type and order of the transfer function can be changed during(More)
The paper presents the structure and the performance of signal processing algorithms that simulate natural room reverberation. It deals with three digital complete artificial reverberators, built up of Schroeder’s early reverberator and a late reverberator built with all-pass filters: Schroeder’s, Gardner’s or absorbent all-pass reverberator. For each of(More)
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