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This paper addresses the fundamental problem of multi-channel system identification given the multiple input and single output signals of a MISO system. The presented approach is based on the normalized least mean square (NLMS) algorithm in combination with a set of special excitation signals, constructed from so called perfect sequences (PSEQs). The new(More)
In today’s teaching and learning approaches for first-semester students, practical courses more and more often complement traditional theoretical lectures. This practical element allows an early insight into the real world of engineering, augments student motivation, and enables students to acquire soft skills early. This paper describes a new freshman(More)
The aim of this study was the introduction of a specific class of signals, the so-called perfect sequences (PSEQ), in a novel approach for sonotubometry of the Eustachian tube (ET). Sonotubometry using PSEQ stimuli was performed on 20 healthy subjects in order to gauge its potential for clinical applications. In a series of 320 measurements ET opening was(More)
CONCLUSION Sonotubometry with perfect sequences (PSEQ) was able to detect eustachian tube (ET) openings in both normal and pathological ears. Impaired ears showed ET openings in almost all cases; however, these proved to be not only less frequent, but also with lower amplitude and shorter duration. OBJECTIVES To investigate the function of impaired ET(More)
Fast and robust acoustic system identification is still a research topic of interest, because of the typically time-variant nature of acoustic systems and the natural performance limitation of electroacoustic measurement equipment. In this paper, we propose NLMS-type adaptive identification with perfect-sweep excitation. The perfect-sweep is derived from(More)
First Steps into Practical Engineering for Freshman Students Using MATLAB and LEGO Mindstorms Robots Alexander Behrens, Linus Atorf, Robert Schwann, Johannes Ballé, Thomas Herold and Aulis Telle 1Institute of Imaging and Computer Vision, 2Chair of Electrical Engineering and Computer Systems, 3Chair and Institute of Communications Engineering, 4Institute of(More)
Methods for measuring the impulse response of a linear transmission system and system identification algorithms in general must be robust against noise in the measured system response. To handle the noise it is of great advantage to know the instantaneous signal-to-noise ratio (SNR), especially in situations with changing noise conditions. In this paper we(More)
Besides lectures of theoretical foundations, contemporary teaching and learning concepts for first semester students consider more and more practically motivated courses. In this context, a new first-year student introduction course in practical engineering is established in the first semester curriculum of Electrical Engineering at RWTH Aachen University,(More)
INTRODUCTION Sonotubometry allows an assessment of the Eustachian tube (ET) function under physiological conditions. The application of conventional sinus signals is not reliable enough for routine clinical use. The aim of this study was to investigate ET activity with so-called perfect sequences (PSEQ). PATIENTS AND METHODS PSEQs generated by a(More)
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