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Events for April 07, 2008
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DICIT - An Example of Acoustic Scene Analysis and Distant-talking Based Spoken Dialogue System
Mon, Apr 07, 2008 @ 10:00 AM - 11:00 AM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Maurizio OmologoAbstract:The aim of this talk is to introduce the DICIT EC project. DICIT focuses on the development of advanced
acoustic sensor based technologies and the related application to the smart-home environment. The main
foreseen application is an automatic voice interaction system, with users at a distance of up to some meters from
a set of microphones. Voice input operates in a complementary modality to the use of remote control, this way allowing one to control TV and related devices in a natural and flexible way. Due to the interference of other
coexisting active sound sources (e.g. loudspeakers, other talkers and noise sources) and to the effect of room
acoustics, both the processing and the understanding of given speech utterances become more problematic with
respect to the ideal situation tackled when using a close-talking microphone. To this regard, the talk will
provide an overview of the basic problems and technologies being developed as far as the multi-microphone
front-end are concerned. Other activities and results obtained during the first 18 months of the project will then be presented together with some video-clips showing the potential of the technologies so far developed.Bio:Maurizio Omologo was born in Padova (Italy) in 1959, and received the Laurea degree with honours in
Electrical Engineering (University of Padova) in 1984. From 1984 to 1987 he was Researcher at the Speech
Coding Department of CSELT - Torino (Italy). In 1988 he joined ITC-irst, as Senior Researcher of the Acoustic
and Speech Recognition group. Since 1998 he has been acting as head of the SHINE (Speech Interaction in
Noisy Environment) project at ITC-irst, now Bruno Kessler Foundation (FBK)-irst. From January 2003 to
December 2005 he was Associate Editor of the IEEE Transactions on Speech and Audio Processing journal. He
also has been teaching "Audio signal processing" at the Department of Information and Communication
Technology - University of Trento, since 2002. Currently, he acts as Coordinator of DICIT, a European Project
of the VI EC Framework Programme.Host: Prof. Shrikanth NarayananLocation: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Talyia Veal
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Wen Li, Professor of Mechanical and Automation Engineering, Chinese University of Hong Kong
Mon, Apr 07, 2008 @ 12:30 PM - 01:50 PM
Alfred E. Mann Department of Biomedical Engineering
Conferences, Lectures, & Seminars
MEMS and Nanosensors
Audiences: Department Only
Contact: Mischalgrace Diasanta
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Impulse-based UWB Systems and Applications
Mon, Apr 07, 2008 @ 02:00 PM - 03:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
SPEAKER: Tor Sverre (Bassen) Lande, Professor, Dept. of Informatics, University of Oslo, NorwayABSTRACT: The old idea of impulse radio dates back to Marconi's first wireless transmissions using sparks. Unlike most wireless today, impulse radio transmissions are extremely wideband signals. The recently FCC-released frequency band from 3.1GHz to 10.6GHz is the widest unlicensed frequency band every released (7.5GHz). This ultra wide bandwidth (UWB) is commercially explored for even faster data transfer using traditional, multi-band (OFDM) RF techniques. However, the available bandwidth is wide enough for impulse radio transmission giving new functionality and new implementation challenges.I will show how power efficient impulse radio solutions are feasible in standard digital CMOS technology. Quite non-standard and untraditional design strategies must be used including time-domain signal processing. Circuit topologies for higher order Gaussian pulse generation and power efficient, correlating RAKE receivers will be explained.Impulse radio transmissions have additional interesting properties compared to narrowband modulation.-With time-domain processing (TDOA) highly accurate positioning is feasible in the millimeter range.-Improved sensitivity for robust communication.-Large number of channels (>100).Novel applications are also feasible using impulse transmission. Combining unconventional design techniques like "Swept-Threshold sampling" and digital lossless integration, micropower impulse radar is feasible in CMOS. A >30GHz sampler is used to accumulate and recover reflected electromagnetic energy. These new sensing devices (medical radar) may be explored for reading vital body signs (pulse, breathing) embedded in your car seat or hospital emergency bed. Just imagine what you can do looking though heavy matter!BIO: Tor Sverre Lande is a professor in the Microelectronic Systems at the Department of Informatics, University of Oslo. From 2004 he is also serving as a visiting professor at the Institute of Biomedical Engineering, Imperial College, London, UK. His primary research is related to microelectronics, both digital and analog. Research fields are neuromorphic engineering, analog signal processing, micropower circuit design, biomedical circuits and systems and impulse radio. He is the author or co-author of more than 90 scientific publications with chapters in two books. He is currently serving as an associate editor of several scientific journals. He has served as guest editor of special issues like IEEE Transactions on Circuits and Systems, vol. II, special issue on "Floating Gate Circuits and Systems", Jan 2001, and IEEE Transactions on Circuits and Systems, vol. I, special issue on "Biomedical Circuits and Systems", (Vol 52, 12, Dec. 2005). He is/has been a technical committee member of several international conferences and has served as reviewer for a number of international technical journals. He has served as Technical Program Chair for several international conferences (ISCAS 2003 in Bangkok, NORCHIP 2004 in Oslo, BioCAS workshop 2004 in Singapore, BioCAS 2006 in UK). He was chair elect (2003-2005) of the IEEE Biomedical Circuits and Systems technical committee (BioCAS) and is also a member of other CAS technical committee. In 2006 he was appointed Distinguished Lecturer of the IEEE Circuits and Systems Society (CAS) and elected member of CAS Board of Governors. He is also serving as Editor-in-Chief of the new IEEE Transactions on Biomedical Circuits and Systems. In 2006 he was appointed Senior Member of the IEEE.
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Mayumi Thrasher
