Damián Martínez-Muñoz

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In this letter, we propose a novel matching pursuit-based method for transient modeling with application to parametric audio coding. The overcomplete dictionary for the matching pursuit is composed of wavelet functions that implement a wavelet-packet filter bank. The proposed transient modeling method is suitable to be integrated into a parametric audio(More)
In this work, a filter bank-based algorithm for electrocardiogram (ECG) signals compression is proposed. The new coder consists of three different stages. In the first one--the subband decomposition stage--we compare the performance of a nearly perfect reconstruction (N-PR) cosine-modulated filter bank with the wavelet packet (WP) technique. Both schemes(More)
In this article, we present an online score following framework designed to deal with automatic accompaniment. The proposed framework is based on spectral factorization and online Dynamic Time Warping (DTW) and has two separated stages: preprocessing and alignment. In the first one, we convert the score into a reference audio signal using a MIDI synthesizer(More)
The anticonvulsant activity of a homologous series of phenyl alcohol amides is described. (+-)-2-Hydroxy-2-phenylbutyramide (1), (+-)-3-hydroxy-3-phenylpentanamide (2) and (+-)-4-hydroxy-4-phenylhexanamide (3) were prepared and tested for their anticonvulsant profile and neurotoxicity. 1, 2 and 3 exhibited a broad profile of anticonvulsant activity and a(More)
This paper outlines a wavelet based audio coding scheme that uses a perceptual entropy criterion to achieve a signal adapted wavelet tree. We are interested in decompositions adapted to the nature of audio signals, but attending to the characteristics of the human hearing system. Our audio coder is compared with two other wavelet based coding schemes: the(More)
This paper deals with the modifications of the audio signal in a parametric audio coder at the decoder stage. The parametric audio coder is based on the application of adaptive signal models for each audio signal component. These adaptive signal models are obtained by using different approaches so as to extract a multi-part model from the audio signal. The(More)
The inhibition of the specific R-[3H]-baclofen binding to GABAB (gamma-aminobutyric acid) sites by a homologous series of phenyl alcohol amides was tested in rat brain synaptic membranes. Some of these phenyl alcohol amides were designed as anticonvulsants as well as antagonists of the GABAB receptor. These anticonvulsants showed a high affinity to the(More)
The effect of phenytoin (PHT) on Na(+)-K(+)-ATPase and Mg(2+)-ATPase activities and on [14C]-PHT binding in vitro to synaptosomal and mitochondrial subcellular fractions from rat cerebral cortex was studied after chronic PHT treatment. Synaptosomal and mitochondrial fractions were characterized with plasma membrane and mitochondrial enzymatic markers.(More)