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Showing 10 out of a total of 10 results for community: Технически университет - София. (0.007 seconds)
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, (2004)Wide spreading of digital data over the Internet has lead to the increasing need of finding a way to protect their copyright. For that reason protections like digital watermarking have become an interesting area for investigations and scientific researches. In this paper a brief description of the digital watermarking technique is made. A ... -
, (2004)During the recording and transmiddion process of audio signals there are situation when the output signals is distorted from norse.The archive recordings which have very important for the art and history are also noisy distorted. The distortion, cracks and picks in the sound signals have very different nature and ifluence on the sound signals ... -
, (2004)The Wave Field Synthesis (WES) concepts have steadily gained popularity over the past decade. It is based on physical sound field rendering within a certain listening area. The pure audio signal is combined with informations about the room and the source's position to enable the accurate reproduction of the source within its acoustical ... -
, (2004)This paper reviews different models of time frequency changes and frequency distribution of sound signals. The models, are applied to the representation of room acoustics quality; the restoration (denoising) of measured room impulse responses; artificial reverberation and distance effects in virtual auditory displays by audio signal processing systems. -
, (1995)Cryptography is essential for the reliability of the radio connection. Ciphering aims at choosing a technology that will provide the desired reliability of deciphering A comparative analysis of some methods for ciphering speech information is proposed in the article. The criteria for comparing the methods are based on cryptoanalysis, ... -
, (1995)The object-oriented approach for the implementation of an experimental system for extraction of acoustic speech parameters is discussed in the article. The article stresses the building of hierarchy of classes which serve the software system, as superstructure of standard defined classes of Object Windows library (OWL) and ClassLib in the ... -
, (2001)In the paper are reviewed the disadvantages of a multi-layer neural network and possible ways of optimization of its structure with the purpose of eliminating the disadvantages. A distributed neural network is introduced, describing its structure and showing the advantages and disadvantages of such network compared to a standard multi-layer ... -
, (2001)The coding methods based on runlength-limited sequences have played a key role for increasing the qualities and storage capacity of magnetic and optical disks or types. A synthesis algorithm of runlength-limited codes with fixed-length output code words is discussed. The synthesis on theory of finite-state machine is based. Equations for ... -
, (2001)In this paper is described the possibility of using distributed neural network in phonem recognition. An experimental system for vowels recogniton is described with the purpose of showing the advantages of the distributed network against the standard multilayer neural network. Some preprocessing techniques of the spectrum are examined, which ... -
, (2001)In the article is made a survey of methods for designing Microphone arreas. Some of algorithms for sound location with Microphone arreas are presented.
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