Title:Изследване на ефективността на аудио кодеците по отношение на качеството на речта при различни условия на пакетните загуби
Author:Генчев, Ивайло С.; Genchev, Ivaylo S.; Кунчев, Румен Кирилов рец.; Kunchev, Rumen Kirilov rew.; Момчеджиков, Михаил Благоев; Momchedzhikov, Mihailo BlagoevDate:2005Abstract:When transmitting real-time audio information through packet-switched networks, some packets are lost and this reflects directly on the perceived speech quality of the reproduced signal. Various codecs can be used and the perceived quality varies in a complex manner depending on the codec as well as statistical parameters of packet loss. ...Library:
Технически университет - София
Title:Method for audio watermarking based on spectrum pyramid
Author:Kunchev, Rumen Kirilov; Кунчев, Румен Кирилов; Todorov, Vladimir; Тодоров, Владимир; Kuncheva, Rumyana; Momchedzhikov, Mihailo Blagoev rew.; Момчеджиков, Михаил Благоев рец.Date:2005Abstract:A new method for audio watermarking in the phase-frequency domain is presented, based on the Spectrum Pyramid, obtained using the Complex Hadamard Transform. The main
advantages of the method are the absence of quantization noise, the lower computational complexity and the ability for the audio contents owner and for the authorized ...Library:
Технически университет - София
Title:Lossless compression of graphics and contour images, based on WHT and ARLC
Author:Kunchev, Rumen Kirilov; Кунчев, Румен Кирилов; Todorov, Vladimir; Kuncheva, Rumyana; Кунчева, Румяна; Тодоров, Владимир; Момчеджиков, Михаил Благоев рец.; Momchedzhikov, Mihailo Blagoev rew.Date:2005Abstract:In the paper is presented new algorithm for lossless compression of graphic and tour still images, processed with two-dimensional (2D) Walsh-Hadamard Transform and adaptive run-length coding (ARLC). The results obtained after processing of large number of test ages are presented in the paper and are compared with those for JPEG2000 standard. ...Library:
Технически университет - София
Title:Изследване и разработка на технологии за създаване на тематични карти за приложение в интелигентни системи за обучение
Author:Димитрова, Тодорка С.; Dimitrova, Todorka S.; Павлова, Райна Стоичкова; Pavlova, Rayna Stoichkova; Георгиева, Снежанка Д.; Панков, Иван рец.; Pankov, Ivan rew.Date:2005Abstract:The paper presents the study of advanced theory development of knowledge based systems in Internet environment and its implementation in e-learning course development. The topic maps and ontology approach is used in the most recent developments in this area. The topic maps are means that could be used for creating logical structures for ...Library:
Технически университет - София
Title:Проектиране и спецификация на език за дефиниране на потребителски интерфейс на електронни учебни ресурси в Интернет
Author:Димитрова, Тодорка С.; Dimitrova, Todorka S.; Панков, Иван рец.; Pankov, Ivan rew.Date:2005Abstract:The article discusses an approach for design and specification of a markup language for Internet-based eLearning GUI definition. The language called LIML is SGML and XML-compliant and provides linguistic instruments for describing the structure, the style, the content and the behavior of interface model that represents a standard eLearning ...Library:
