2,027 resources related to Acoustic Arrays
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The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted full papers will be peer reviewed. Accepted high quality papers will be presented in oral and poster sessions,will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE.
To promote awareness, understanding, advancement and application of ocean engineering and marine technology. This includes all aspects of science, engineering, and technology that address research, development, and operations pertaining to all bodies of water. This includes the creation of new capabilities and technologies from concept design through prototypes, testing, and operational systems to sense, explore, understand, develop, use, and responsibly manage natural resources.
OCEANS 2020 - SINGAPORE
An OCEANS conference is a major forum for scientists, engineers, and end-users throughout the world to present and discuss the latest research results, ideas, developments, and applications in all areas of oceanic science and engineering. Each conference has a specific theme chosen by the conference technical program committee. All papers presented at the conference are subsequently archived in the IEEE Xplore online database. The OCEANS conference comprises a scientific program with oral and poster presentations, and a state of the art exhibition in the field of ocean engineering and marine technology. In addition, each conference can have tutorials, workshops, panel discussions, technical tours, awards ceremonies, receptions, and other professional and social activities.
2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)
Ferroelectric materials and applications
The ICASSP meeting is the world's largest and most comprehensive technical conference focused on signal processing and its applications. The conference will feature world-class speakers, tutorials, exhibits, and over 50 lecture and poster sessions.
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
Speech analysis, synthesis, coding speech recognition, speaker recognition, language modeling, speech production and perception, speech enhancement. In audio, transducers, room acoustics, active sound control, human audition, analysis/synthesis/coding of music, and consumer audio. (8) (IEEE Guide for Authors) The scope for the proposed transactions includes SPEECH PROCESSING - Transmission and storage of Speech signals; speech coding; speech enhancement and noise reduction; ...
The Transactions on Biomedical Circuits and Systems addresses areas at the crossroads of Circuits and Systems and Life Sciences. The main emphasis is on microelectronic issues in a wide range of applications found in life sciences, physical sciences and engineering. The primary goal of the journal is to bridge the unique scientific and technical activities of the Circuits and Systems ...
Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.
IEEE Computer Graphics and Applications (CG&A) bridges the theory and practice of computer graphics. From specific algorithms to full system implementations, CG&A offers a strong combination of peer-reviewed feature articles and refereed departments, including news and product announcements. Special Applications sidebars relate research stories to commercial development. Cover stories focus on creative applications of the technology by an artist or ...
2018 IEEE International Ultrasonics Symposium (IUS), 2018
Human activity recognition has been used in practical applications, gaming, monitoring of smart home, fire searching and rescuing, hospital patient management, etc. One or few acoustic sensors are used in conventional detection, which is required more features extracted from acoustic data for high accuracy. In this study, two-dimensional acoustic arrays are proposed for human activity recognition using convolutional neural networks. ...
2013 IEEE Global Conference on Signal and Information Processing, 2013
This paper describes a method for selecting the location of multiple passive acoustic arrays to optimize information collection. The passive acoustic arrays are used to localize a contact, and our goal is to choose how to situate and orient the arrays to optimize this localization estimate. To this end, we derive the Cramér-Rao bound on the variance of the estimate ...
'Challenges of Our Changing Global Environment'. Conference Proceedings. OCEANS '95 MTS/IEEE, 1995
The Small Boat Deployment System (SBDS) was developed for the Mobile Inshore Underwater Warfare System Upgrade (MIUW-SU) program to deploy and recover two acoustic arrays and 8-km (4.3 nm) of fiber optic/electrical trunk cable from a 6.7 m (22-ft) Boston Whaler outboard motor boat. The arrays are part of a transportable surveillance system for guarding near shore assets that integrates ...
2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698), 2003
Current acoustical recording systems provide limited flexibility in sound recovery; single microphone systems reconstruct sound over time at a single spatial location, or "one-dimensional" (temporal) recording, whereas arrays may provide isolation in an azimuthal direction of along a pencil beam (two or three dimensional, respectively). Full four-dimensional recovery of a source at any spatial location, particularly using an arbitrary, modest ...
Conference Record of The Twenty-Ninth Asilomar Conference on Signals, Systems and Computers, 1995
A new array processing algorithm is presented for estimating dispersion characteristics from borehole acoustic measurements. It involves estimating the propagating modes of the borehole response function by first Fourier transforming the space-time array in the time dimension, then at each temporal frequency, the spatial wavenumber of the modes are obtained using a modified matrix pencil algorithm. This modification is referred ...
Random Sparse Adaptation for Accurate Inference with Inaccurate RRAM Arrays - IEEE Rebooting Computing 2017
Yamaha's Avant Grand Digital Piano Mimics Acoustic
Lighting the Way: Optical Sensors in the Life Sciences
Single Crystal AlGaN Bulk Acoustic Wave Resonators on Silicon Substrates with High Electromechanical Coupling: RFIC Industry Showcase
Concept of Arrays
Micro-Apps 2013: Design and Simulation of Phased Arrays in VSS
5G mmW Phased Arrays - Future X Radio Panel Talk - Baljit Singh - Brooklyn 5G Summit 2018
A 28GHz CMOS Direct Conversion Transceiver with Packaged Antenna Arrays for 5G Cellular Systems: RFIC Industry Showcase 2017
5G UE Phased Array Design - Future X Radio Panel Talk - Ozge Koymen - Brooklyn 5G Summit 2018
Contactless Wireless Sensing - Shyam Gollakota - IEEE EMBS at NIH, 2019
Massive MIMO Active Antenna Arrays for Advanced Wireless Communications: IEEE CAS lecture by Dr. Mihai Banu
mmwave Phased Arrays for 5G Applications - Challenges and Opportunities - Ian Gresham: Brooklyn 5G Summit 2017
A 73GHz PA for 5G Phased Arrays in 14nm FinFET CMOS: RFIC Industry Showcase 2017
Abbas El Gamal accepts the IEEE Richard W. Hamming Medal - Honors Ceremony 2016
CASS Lecture by Dr. Chris Hull, "Millimeter-Wave Power Amplifiers in FinFET Technology"
A Comparator Design Targeted Towards Neural Net - David Mountain - ICRC San Mateo, 2019
Arun Paidimarri - RFIC Industry Showcase - IMS 2020
The Josephson Effect: The Josephson Volt
Human activity recognition has been used in practical applications, gaming, monitoring of smart home, fire searching and rescuing, hospital patient management, etc. One or few acoustic sensors are used in conventional detection, which is required more features extracted from acoustic data for high accuracy. In this study, two-dimensional acoustic arrays are proposed for human activity recognition using convolutional neural networks. The experiments are employed to collect four activities (standing, sitting, falling, and walking) of volunteers. The features, as input of convolutional neural networks, are extracted from time- and frequency-domain data. The accuracy of the four activities is 97.5% for time-domain data. The results demonstrate the proposed method is effective in human activity recognition with high accuracy.
This paper describes a method for selecting the location of multiple passive acoustic arrays to optimize information collection. The passive acoustic arrays are used to localize a contact, and our goal is to choose how to situate and orient the arrays to optimize this localization estimate. To this end, we derive the Cramér-Rao bound on the variance of the estimate of a target's location as a function of where the sensing resources are placed. We then use this bound to select where to place the sensors. We illustrate the method by selecting where to place and orient 5 arrays in a region.
The Small Boat Deployment System (SBDS) was developed for the Mobile Inshore Underwater Warfare System Upgrade (MIUW-SU) program to deploy and recover two acoustic arrays and 8-km (4.3 nm) of fiber optic/electrical trunk cable from a 6.7 m (22-ft) Boston Whaler outboard motor boat. The arrays are part of a transportable surveillance system for guarding near shore assets that integrates visual, thermal, radar, EMS and acoustic data. The SBDS consists of a tension limited hydraulic winch, a flexible boom, line thrower, precision GPS navigation system, and acoustic release. The hydraulic winch is controlled by an adjustable relief valve to limit tension during deployment and retrieval. Tension control is needed for preventing damage to the fiber optic cable and for a proper deployment. A flexible boom acts like a fishing pole to even out the dynamic loads caused by boat motion. A line thrower is used to shoot a messenger line over the surf zone to shore. The precision GPS is needed to guide the boat along a predetermined route. An acoustic release is used to recover the array. The development program consisted of testing two experimental prototypes and then combining features from both for the final production system. The first prototype tested tension limited controls on a commercially available hydraulic winch and were used to deploy and recover a 10-km (5.4 nm) cable and array from a 15 m (50-ft) boat. The second prototype used a small capacity electric winch for testing procedures and components on a 6.7-m (22-ft) boat. The production system will be tested on a variety of boats with different shore and sea conditions. The SBDS will be delivered to MIUW units in Jan. 96.
Current acoustical recording systems provide limited flexibility in sound recovery; single microphone systems reconstruct sound over time at a single spatial location, or "one-dimensional" (temporal) recording, whereas arrays may provide isolation in an azimuthal direction of along a pencil beam (two or three dimensional, respectively). Full four-dimensional recovery of a source at any spatial location, particularly using an arbitrary, modest array of acoustical sensors, enables many new applications. A modified frequency-domain MVDR adaptive beamforming algorithm especially tailored for high-performance recovery of nonstationary targets in similar background demonstrates in simulation SIR gains of over 12 dB for speech-in-speech acoustic target recovery, even in situations with more sources than sensors.
A new array processing algorithm is presented for estimating dispersion characteristics from borehole acoustic measurements. It involves estimating the propagating modes of the borehole response function by first Fourier transforming the space-time array in the time dimension, then at each temporal frequency, the spatial wavenumber of the modes are obtained using a modified matrix pencil algorithm. This modification is referred to as "forward/backward averaging" as the complex wavenumber estimates are formed from the average of a "forward" matrix pencil and a "backward" matrix pencil. Use of a tolerance specification between the estimates allows a natural discrimination between signal and noise wavenumbers.
In July 2004, a team of the Naval Facilities Engineering Service Center (NFESC), Northrop Grumman Corporation, and Sound & Sea Technology, Inc. installed a passive acoustic underwater harbor security system in shallow water off Hueneme Harbor, California. The system is comprised of two arrays using advanced-technology optical-fiber hydrophones cabled to a processing center on shore. This system has operated successfully since it was installed and survived the severe winter, 2005 storms. The system has been tested in a series of exercises against a variety of targets and has demonstrated the ability to detect and track both surface and subsurface intruders. The system will be augmented with a variety of additional sensors for integration into a comprehensive port and harbor security system
The authors have been developing an acoustic observation system that can record the high frequency bio-sonar clicks of the Ganges river dolphins and can estimate their 3-D location in real-time. In order to expand the coverage of the acoustic measurement, a new integrated observation system, which consists of one main array system and the newly developed multiple small array system, is proposed. For the first step, we deployed one main array and one small 4-hydrophone cross array system in the Ganges River. Combining the measurement results of the two array systems, we successfully obtained improved estimates of acoustic positions of the sound source than that of a single stand-alone measurement.
The power characteristics of a horizontal aerial in an ideal waveguide are considered. The length of the aerial is comparable or greater than the thickness of the layer.
This paper considers the performance of multichannel sound equalization in reverberant environments. Such a system could be used, for example, in hands- free communication devices or virtual audio systems. Using results from statistical room acoustics, we derive a theoretical expression that predicts the degradation in performance of an ideal equalization system as the sound source moves from its nominal position. This provides bounds on the performance that one could expect to achieve when using an equalization system in an actual room. We then use computer simulations to investigate the effect of physical parameters such as the relative positions of the source and the receivers, as well as effects of different design parameters. Based on these investigations, we provide design guidelines on how to maximize the robustness of a multichannel acoustic equalization system.
The design of a medical acoustic array for a given echographic system is often a compromise between the lateral resolution and the grating sidelobe level. For a fixed number of active channels, the only way to decrease the grating sidelobe level is to decrease the array pitch. This can be done by working with an acoustical pitch smaller than the electrical pitch, which is possible by using an electrical passive interpolation circuit between the electrical channels and the transducers. This method takes advantage of the fact that in echographic systems the sampling of the array is generally limited by the maximum number of electronic channels and not by the minimum technically achievable pitch on the transducer. The theoretical analysis and design of such arrays are described. This technique was used to construct a 3.75-MHz curved array. The result is a 10-dB improvement of the sidelobe level.<<ETX>>
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