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Bavelaar, Koen (author), Verweij, Jeroen (author)This thesis details the design of a selection operator used in a Genetic Algorithm. The Genetic Algorithm is used for loudspeaker filter design of three way loudspeakers for which tournament selection was chosen as selection operator. A methodology is proposed and used to tune the parameters of tournament selection, which is based on diversity...bachelor thesis 2023
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Nijenhuis, Jonathan (author), Zunderman, Timo (author)This thesis describes the design and implementation of a controller and GUI for an AI loudspeaker filter design program. This program uses a genetic algorithm to create a combination of analog passive filters, one for each driver in a loudspeaker system. In the controller, two cost functions are designed to evaluate these filter combinations,...bachelor thesis 2023
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Barendse, ZOYLA (author), van Overbeeke, Willem (author)This paper reports the design of a part of a genetic algorithm, which is made to design analog filters for loudspeakers. The part in this report is the part which deals with the representation of electrical filter circuits, the mutation of these filters, and finding their transfer function. The considered representations are graph coding and a...bachelor thesis 2023
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Jansen, Pim (author)Global Navigation Satellite Systems (GNSSs) have become a critical part of the infrastructure of modern society. Radio interference can introduce position or timing errors in systems that use GNSS or, in a worst-case scenario, block the reception of GNSS signals in full. Part of this critical infrastructure is, among others, power plants, banks,...master thesis 2022
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Luo, Xiaoyao (author)This thesis covers two topics. The first one is signal design for accurate Time-of-Arrival estimation using a number of frequency separated signals. Rather than use a full UWB band, we will use sparse subband signals spanning the full band to construct a new virtual UWB signal. To evaluate the performance of the constructed signal, Cramer-Rao...master thesis 2022
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Eveleens, Richard (author), Gottmer, Leila (author), Haarman, Mart (author)This thesis report focuses on possible methods of digital implementation of motional feedback in a bass loudspeaker. In this thesis, the control system will be created for a monopole and a dipole speaker specifically. It does so by sketching the outlines of such a system and examining possible designs for the components required to suppress...bachelor thesis 2020
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Hijlkema, Sybold (author), Regmi, Bishwas (author)This thesis describes the digital implementation of a motional feedback system for a bass loudspeaker. Motional feedback is used to suppress the linear and non-linear distortions produced by the loudspeaker, especially at the low frequencies. An accelerometer is mounted on the cone of the loudspeaker to provide the feedback signal. The...bachelor thesis 2018
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Gali, Sundeep (author)In order to make the bifacial yield prediction models commercially available, a lot of work their development, improvement and validation is being done by many research institutes. At Energy research center of the Netherlands (ECN), one such model is under development. In this project, couple of aspects were investigated to give better insight...master thesis 2017
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Sachdeva, Prachi (author)This thesis project researches the effect of the optimisation time interval on the performance of a self-optimised mobile network. The goal of the thesis is to ascertain if there exists an optimal time interval for the self-optimisation of the KPN network, and what that interval is. In order to research this question, the project uses data from...master thesis 2017
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Gonzales Huamán, E.E. (author)It is well-known that GPS is a widely used technology for localization in outdoors environments. Nonetheless, such standard fails to provide a practical and accurate solution for localization and ranging applications within indoor environments due to the need of satellites and meter-level accuracy, which is poor for indoor environments. It is in...master thesis 2017
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Zhang, Y. (author)A Chinese Digital Radio (CDR), labelled as GY/T 268-2013 [1], has been made and become effective in 2013 by SGAPPRFT (State General Administration of Press, Publication, Radio, Film and Television), which is an In-Band On-Channel (IBOC) digital audio broadcasting hybrided with analog FM signal in one FM channel. This report investigates the...master thesis 2016
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Overwater, R.W.J. (author), Rosema, Y. (author)Nowadays, the digital possibilities to implement control systems are easier to understand and results can be achieved quicker than in the 1970’s, when Philips was experimenting with motional feedback speakers. This thesis covers the feedback system of a digital implementation of a motional feedback system for speakers. After the design choices...bachelor thesis 2016
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Kastelijn, F. (author), Koeman, N.W. (author)Deze thesis gaat over het ontwerpen van antennes voor een draadloos audiosysteem. De zender van het audiosysteem beschikt over een IFA (inverted-F antenne) en de ontvanger over twee MIFA’s (meandered inverted-F antenne). Door de antennes te meten zijn waarden voor het compensatienetwerk ontworpen die het bereik van het audiosysteem moeten...bachelor thesis 2014
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Bloom, R. (author), Bonsema, C. (author), Wijtemans, L. (author)In dit werk wordt het ontwerp en de implementatie beschreven van een systeem dat draadloos de transmissie van audiosignalen realiseert. Het systeem accepteert zowel analoge als digitale audiosignalen aan de ingang en biedt aan de uitgang het audiosignaal zowel als een digitaal als een analoog signaal. Het systeem is ontworpen rond een...bachelor thesis 2014
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Ramkumar, A. (author)Ultra-wideband (UWB) is a promising radio technology which is well suited to low power short-range wireless applications. At Holst Centre/imec, there is a research program on the design and implementation of ultra low power, Impulse Radio-UWB (IR-UWB) wireless systems suitable for audio streaming and real time localization systems. Some key...master thesis 2012
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Shastry Ravishankar, D. (author)The Super Regenerative Receiver was invented by Armstrong in 1922 [1]. It is used in various applications such as sensor networks, short distance telemetry, home automation, biomedicine, remotely controlled systems, etc., because of its simplicity and low power design. In the classical super regenerative receiver, the RF oscillations obtained at...master thesis 2012
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Trommel, R.P. (author), Feenstra, T. (author)7T MRI-scanners kunnen met de huidige technieken nog niet nauwkeurig genoeg getriggerd worden voor het uitvoeren van scans van hoge kwaliteit. In opdracht van het LUMC is er daarom een project opgestart om een systeem te ontwerpen dat biomedische signalen kan meten, verwerken en versturen om de 7T MRI-scanner te kunnen triggeren. Er zijn drie...bachelor thesis 2012
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Dekker, T.D. (author), Jaspers, M.J. (author)Met behulp van een MRI-scanner kan er bij een patiënt een afbeelding gemaakt worden van de binnenkant van het lichaam zonder dat deze opengemaakt hoeft te worden. Deze afbeeldingen worden gemaakt om een diagnose te stellen. De arts kan beter zien wat er aan de hand is met de patiënt als de resolutie van de afbeelding verbetert. De resolutie kan...bachelor thesis 2012
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Niddha, V.S. (author), Kaasenbrood, M.D.J. (author)Voor het BAP hebben wij als opdracht gekozen om een draadloos domoticasysteem te ontwerpen op basis van het ZigBee draadloos netwerk. Het iNow domoticasysteem is een domoticasysteem dat het mogelijk maakt om verschillende taken in huis te automatiseren en inzicht te geven in het verbruik van de aangesloten apparatuur. Het domoticasysteem bestaat...bachelor thesis 2011
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Visser, A.D. (author)This thesis, analyses the performance of an Ultra Wide Band (UWB) Frequency Modulated Continuous Wave (FMCW) ranging system in the presence of additive white Gaussian noise (AWGN). The distortion of the UWB FMCW signal’s phase, due to noise, deteriorates its frequency spectrum components. This corrupts the multipath delay information and...master thesis 2010
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