Browsing by Author "Demiroğlu, Cenk"
Now showing items 21-40 of 79
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Development of various corner-lit backlighting concepts in an advanced smart LED TV
Karslı, Kıvanç (2015-01)CCFL (Cold Cathode Florescent Lamp) based LCD (Liquid Crystal Display) TVs are replaced by Smart LED TVs with the help of recent improvements of the LED (Light Emitting Diode), electronics and information technologies. ... -
Disentangling human trafficking types and the identification of pathways to forced labor and sex: an explainable analytics approach
Eryarsoy, E.; Topuz, K.; Demiroğlu, Cenk (Springer, 2023-07)Terms such as human trafficking and modern-day slavery are ephemeral but reflect manifestations of oppression, servitude, and captivity that perpetually have threatened the basic right of all humans. Operations research ... -
Diversity techniques for ultraviolet communications
Ardakani, Maryam Haghighi (2016-08)Strong molecular and aerosol scattering in ultraviolet (UV) wavelengths enable mechanisms where transmitter can communicate with the receiver in the absence of line of sight (LOS) link. Recent advances in solid state ... -
Diversity-multiplexing tradeoff for network coded cooperative OFDMA systems
Heidarpour, Ali Reza (2016-08)Cooperative communication (CC) exploits the broadcasting nature of wireless transmission and creates a distributed multiple-input multiple-output (MIMO) system among the wireless nodes which are physically separated from ... -
DNN-based speaker-adaptive postfiltering with limited adaptation data for statistical speech synthesis systems
Öztürk, M. G.; Ulusoy, O.; Demiroğlu, Cenk (IEEE, 2019)Deep neural networks (DNNs) have been successfully deployed for acoustic modelling in statistical parametric speech synthesis (SPSS) systems. Moreover, DNN-based postfilters (PF) have also been shown to outperform conventional ... -
Eigenvoice speaker adaptation with minimal data for statistical speech synthesis systems using a MAP approach and nearest-neighbors
Mohammadi, Amir; Sarfjoo, Seyyed Saeed; Demiroğlu, Cenk (IEEE, 2014-12)Statistical speech synthesis (SSS) systems have the ability to adapt to a target speaker with a couple of minutes of adaptation data. Developing adaptation algorithms to further reduce the number of adaptation utterances ... -
Eklemeli̇ di̇ller i̇çi̇n düşük bellekli̇ melez i̇stati̇sti̇ksel/bi̇ri̇m seçmeli̇ MKS si̇stemi̇
Guner, Ekrem; Demiroğlu, Cenk (IEEE, 2012)The HMM-based TTS (HTS) approach has been increasingly getting more attention from the TTS research community. One of the advantage is the lack of spurious errors that are observed in the unit selection scheme. Another ... -
Enhanced unipolar OFDM based relay-assisted visible light communications
Gerard, Djengomemgoto (2016-08)Due to spectrum scarcity of the conventional radio frequency (RF) and the higher demand for wireless services, visible light communication (VLC) has emerged as a complementary solution to RF technology for ubiquitous ... -
Evaluation of linguistic and prosodic features for detection of Alzheimer’s disease in Turkish conversational speech
Khodabakhsh, Ali; Yesil, Fatih; Guner, Ekrem; Demiroğlu, Cenk (Springer Science+Business Media, 2015-12)Automatic diagnosis and monitoring of Alzheimer’s disease can have a significant impact on society as well as the well-being of patients. The part of the brain cortex that processes language abilities is one of the earliest ... -
Experimental analysis of RF based multi plane diffraction with over the air active cellular signal measurements
Aytekin, Ali (2021-01-13)In our study, mathematical modelling of single-plane diffraction (SPD) and multi-plane diffraction (MPD) architectures based on RF waves is created as theoretical. Free space, SPD and MPD based experimental studies are ... -
Experimental analysis of the impact of the refrigerator components on conducted electromagnetic interference
As the number of electronic devices in our daily lives increases day by day, the risk of electromagnetic interference (EMI) between the devices and between the device and the grid increases. Refrigerators are the only ... -
Experimental impact analysis of the refrigerator cable design on disturbance power test
The ever-increasing variety of electronic products brings with it many tests and controls. Especially for a product such as a refrigerator, which has an important place in the lives of users and works non-stop for almost ... -
Finding relevant features for statistical speech synthesis adaptation
Bruneau, P.; Parisot, O.; Mohammadi, Amir; Demiroğlu, Cenk; Ghoniem, M.; Tamisier, T. (European Language Resources Association, 2014-05)Statistical speech synthesis (SSS) models typically lie in a very high-dimensional space. They can be used to allow speech synthesis on digital devices, using only few sentences of input by the user. However, the adaptation ... -
Gauss karışım modeli tabanlı konuşmacı belirleme sistemlerinde klasik MAP uyarlanması yönteminin performans analizi
Erdoğan, A.; Demiroğlu, Cenk (IEEE, 2010)Gaussian mixture models (GMM) is one of the most commonly used methods in text-independent speaker identification systems. In this paper, performance of the GMM approach has been measured with different parameters and ... -
Gauss karışım modeli tabanlı konuşmacı doğrulama sistemlerinde kişiye ve kanala uyarlanmada klasik MAP tabanlı yöntemlerin performans analizi
Koşunda, Serol; Yeşil, Fatih; Ayazoğlu, Yaprak; Demiroğlu, Cenk (IEEE, 2011)In this paper, performance of Gaussian mixture models (GMM) based algorithms implemented in Speech Processing Laboratory at Ozyegin University, within NIST SRE2004 and 2006 database was reported. Gaussian mixture models ... -
Gyroscopes based on acoustic waveguides
Çetin, Hakan (2016-08)We propose novel gyroscope architectures based on acoustic waves propagating in a waveguide. This thesis is composed of two parts. In the first part, the fundamentals of the proposed gyroscope are discussed. The new gyroscope ... -
Hybrid nearest-neighbor/cluster adaptive training for rapid speaker adaptation in statistical speech synthesis systems
Mohammadi, Amir; Demiroğlu, Cenk (International Speech Communication Association, 2013)Statistical speech synthesis (SSS) approach has become one of the most popular methods in the speech synthesis field. An advantage of the SSS approach is the ability to adapt to a target speaker with a couple of minutes ... -
A hybrid statistical/unit-selection text-to-speech synthesis system for morphologically rich languages
Güner, Ekrem (2013-06)Two most prominent examples of Text-to-Speech (TTS) systems are Unit Selection based TTS (UTTS) and the Hidden Markov Model (HMM) based TTS (HTTS). UTTS has been the dominant approach of the last decade while HTTS has been ... -
Hybrid statistical/unit-selection Turkish speech synthesis using suffix units
Demiroğlu, Cenk; Güner, Ekrem (Springer International Publishing, 2016-12)Unit selection based text-to-speech synthesis (TTS) has been the dominant TTS approach of the last decade. Despite its success, unit selection approach has its disadvantages. One of the most significant disadvantages is ... -
Intelligent information gathering for open world policy reasoning
Büyükyıldız, İrfan Can (2015-08)Sistem politikaları her birimin kendi hedeflerine ulaşmaya çalıştığı çoklu etmen sistemlerinde önemli bir rol oynamaktadır. Politikalar ve ilgili mekanizmalar birimlerin kötü niyetli ve istenmeyen faaliyetlerini engellemek ...
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