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Single-microphone speech dereverberation is a challenging problem of de-convolving the reverberation produced by the room impulse response from the speech signal, when only one observation of the reverberant signal (one microphone) is available. By using linear prediction (LP)-residuals and spectral subtraction as two promising tools for dereverberation, a new technique is proposed. The first stage...
Two robust affine projection sign (RAPS) algorithms, both of which minimize the mixed norm of and of the error signal, are proposed. The direction vector of the RAPS algorithms is obtained from the gradient of an norm-based objective function, while two related norm-based minimization problems are solved to obtain the line search of the two RAPS algorithms. The norm-based direction...
In this paper, an efficient algorithm for fast computation of the conjugate symmetric sequency-ordered complex Hadamard transform (CS-SCHT) of any length that is a power of two is proposed using the Kronecker product. Since the CS-SCHT matrix is factored into a product of sparse matrices, the resulting structure for the algorithm is very attractive for implementation and similar to that of the well-known...
Prediction of RNA secondary structure is one of the pivotal tasks in bioinformatics. Several computational methods based on dynamic programming, statistical models, have been proposed with considerable success. A typical substructure that occurs in several classes of RNAs, called pseudoknot, plays vital role in many biological processes. Prediction of the pseudoknots in RNA secondary structure is...
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