Pub Date : 2014-04-17DOI: 10.1109/SAS.2014.6798930
T. Sun, Jia-Hao Li, H. Shieh, L. Kang, Yi-Chuan Lu, Teng-Yi Wang
Considered that the dual band sensor system is the most popular design at present, this study discussed the design of a dual-band hybrid array readout circuit. The direct injection circuit structure was used in the unit pixel. The design, simulation, and layout were conducted in the 40um×40um unit pixel to complete middle and long waveband signal readouts, in order to achieve one sensor unit with two sensor modes. The readout circuit chip adopted TSMC 0.35um 2P4M CMOS 5V to design a 16×12 array readout circuit, with an input current range of the measured current at 1.9pA to 50 nA, an adjustable integration time, a maximum frame rate of 110Hz, the output swing of the chip signal of 2V, the maximum operating chip frequency of 3MHz, power dissipation of 18mW, system noise voltage Vrms of 0.68mV, and signal-noise ratio of 69dB. Finally, the tested chip was used to connect the detection system proxy board and digital signal board, and digital signal processing video through front-end filters and analog to digital converter, in order to complete signal conversion and digital signal processing. With the digital control signal provided by the signal board and signal capture, the back-end digital signal was processed and imaged on the screen. The readout circuit chip connected the signal proxy board for testing. The overall system resolution reached 10 bit.
{"title":"Design and implementation of array readout integrated circuit and image system for current mode sensors","authors":"T. Sun, Jia-Hao Li, H. Shieh, L. Kang, Yi-Chuan Lu, Teng-Yi Wang","doi":"10.1109/SAS.2014.6798930","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798930","url":null,"abstract":"Considered that the dual band sensor system is the most popular design at present, this study discussed the design of a dual-band hybrid array readout circuit. The direct injection circuit structure was used in the unit pixel. The design, simulation, and layout were conducted in the 40um×40um unit pixel to complete middle and long waveband signal readouts, in order to achieve one sensor unit with two sensor modes. The readout circuit chip adopted TSMC 0.35um 2P4M CMOS 5V to design a 16×12 array readout circuit, with an input current range of the measured current at 1.9pA to 50 nA, an adjustable integration time, a maximum frame rate of 110Hz, the output swing of the chip signal of 2V, the maximum operating chip frequency of 3MHz, power dissipation of 18mW, system noise voltage Vrms of 0.68mV, and signal-noise ratio of 69dB. Finally, the tested chip was used to connect the detection system proxy board and digital signal board, and digital signal processing video through front-end filters and analog to digital converter, in order to complete signal conversion and digital signal processing. With the digital control signal provided by the signal board and signal capture, the back-end digital signal was processed and imaged on the screen. The readout circuit chip connected the signal proxy board for testing. The overall system resolution reached 10 bit.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"238 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115095528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-04-17DOI: 10.1109/SAS.2014.6798968
L. Berghella, A. Depari, P. Ferrari, A. Flammini, S. Rinaldi, E. Sisinni, A. Vezzoli
Advantages of smart metering are well known: more control of resource usage, accurate bills and better budgeting. For this reason roll out plans have been created not only for electricity, but also for gas distribution. In such a scenario, some additional difficulties arise due to the need of a wireless and autonomous functioning of meters. In particular, measurement techniques and communication protocols must take into account limited power source availability. In this work the need of a low power handheld device for maintenance (and monitoring) in the context of gas smart metering is addressed. The proposed architecture exploits smart devices (e.g. smartphones or tablets) as user-friendly terminals. Low power consumption is ensured using inductive coupling for data transmissions. A proof-of-concept prototype has been realized confirming the effectiveness of the proposed solution. In particular the consumption of the interface does not affect the overall system lifetime.
{"title":"Low-power wireless interface for handheld smart metering devices","authors":"L. Berghella, A. Depari, P. Ferrari, A. Flammini, S. Rinaldi, E. Sisinni, A. Vezzoli","doi":"10.1109/SAS.2014.6798968","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798968","url":null,"abstract":"Advantages of smart metering are well known: more control of resource usage, accurate bills and better budgeting. For this reason roll out plans have been created not only for electricity, but also for gas distribution. In such a scenario, some additional difficulties arise due to the need of a wireless and autonomous functioning of meters. In particular, measurement techniques and communication protocols must take into account limited power source availability. In this work the need of a low power handheld device for maintenance (and monitoring) in the context of gas smart metering is addressed. The proposed architecture exploits smart devices (e.g. smartphones or tablets) as user-friendly terminals. Low power consumption is ensured using inductive coupling for data transmissions. A proof-of-concept prototype has been realized confirming the effectiveness of the proposed solution. In particular the consumption of the interface does not affect the overall system lifetime.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114290907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-04-17DOI: 10.1109/SAS.2014.6798961
N. Buniyamin, W. Ngah, Z. Mohamad
This paper presents an overview of Bug algorithm family local path planning methodology timeline. The Bug algorithm approach detects the nearest obstacle as a mobile robot moves towards a target with limited information about the environment. It uses obstacle border as guidance toward the target. The robot circumnavigates the obstacle till it finds certain condition to fulfill the algorithm criteria to leave the obstacle towards target point. In addition, this paper presents the performance of a new path planning approach, PointsBug algorithm. The performance of PointsBug was compared to TangentBug in term of duration and distance in various types of environment. TangentBug was selected as the algorithm to be compared to as it is the best performing Bug family algorithm that uses a range sensor similar to PointsBug. The outcomes of the research indicates that PointsBug have outperformed TangentBug in average speed in the selected environment as described in this paper.
{"title":"PointsBug versus TangentBug algorithm, a performance comparison in unknown static environment","authors":"N. Buniyamin, W. Ngah, Z. Mohamad","doi":"10.1109/SAS.2014.6798961","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798961","url":null,"abstract":"This paper presents an overview of Bug algorithm family local path planning methodology timeline. The Bug algorithm approach detects the nearest obstacle as a mobile robot moves towards a target with limited information about the environment. It uses obstacle border as guidance toward the target. The robot circumnavigates the obstacle till it finds certain condition to fulfill the algorithm criteria to leave the obstacle towards target point. In addition, this paper presents the performance of a new path planning approach, PointsBug algorithm. The performance of PointsBug was compared to TangentBug in term of duration and distance in various types of environment. TangentBug was selected as the algorithm to be compared to as it is the best performing Bug family algorithm that uses a range sensor similar to PointsBug. The outcomes of the research indicates that PointsBug have outperformed TangentBug in average speed in the selected environment as described in this paper.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114408685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-04-17DOI: 10.1109/SAS.2014.6798909
I. Woodhead, J. Christie, K. Irie, R. Fenton
The water content of baked products such as bread, cake and biscuits, affect the texture, colour, keeping qualities and consumer acceptance. Currently, moisture content is controlled by ensuring a uniform set of ingredients, mixing and baking, but inevitably variation arises from, for example, variation in ingredient characteristics, position within ovens and ambient temperature and relative humidity. A water content sensor that can measure on-line moisture after baking and adjust oven temperature distribution or just the mean oven temperature, will lead to more consistent products. This paper outlines requirements of a sensor for on-line measurement of moisture content, describes a sensor concept that meets these requirements, and then presents the results from experimental work that determined typical permittivity values of bread, one of the target baked products.
{"title":"A water content sensor for baked products","authors":"I. Woodhead, J. Christie, K. Irie, R. Fenton","doi":"10.1109/SAS.2014.6798909","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798909","url":null,"abstract":"The water content of baked products such as bread, cake and biscuits, affect the texture, colour, keeping qualities and consumer acceptance. Currently, moisture content is controlled by ensuring a uniform set of ingredients, mixing and baking, but inevitably variation arises from, for example, variation in ingredient characteristics, position within ovens and ambient temperature and relative humidity. A water content sensor that can measure on-line moisture after baking and adjust oven temperature distribution or just the mean oven temperature, will lead to more consistent products. This paper outlines requirements of a sensor for on-line measurement of moisture content, describes a sensor concept that meets these requirements, and then presents the results from experimental work that determined typical permittivity values of bread, one of the target baked products.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"01 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130670776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-04-17DOI: 10.1109/SAS.2014.6798926
K. Inomata, W. Tsujita, T. Hirai
This paper presents a new design and achievement of Leaky Coaxial Cable (LCX)-based intrusion-sensing techniques. LCX radiates microwaves from slots milled on the outer conductor. This sensor can detect an intrusion object by measuring the variation of received signal. LCX has two types of emitting modes, radiation mode and surface mode. The microwave radiates to far field in radiation mode. On the other hand, the microwave exists only around the LCX in surface mode. Although the conventional LCX-based sensor operates the LCX in only one mode to detect and classify an object, this paper introduces a simultaneous sensing technique using these two modes. Comparing the signals in both modes, the classification of an object can be estimated. The theory of the emitting modes of LCX and the developed sensor prototype are described. Experimental results are presented to show that the proposed sensing techniques are valid.
{"title":"Two-frequency surveillance technique for intrusion-detection sensor with Leaky Coaxial Cables","authors":"K. Inomata, W. Tsujita, T. Hirai","doi":"10.1109/SAS.2014.6798926","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798926","url":null,"abstract":"This paper presents a new design and achievement of Leaky Coaxial Cable (LCX)-based intrusion-sensing techniques. LCX radiates microwaves from slots milled on the outer conductor. This sensor can detect an intrusion object by measuring the variation of received signal. LCX has two types of emitting modes, radiation mode and surface mode. The microwave radiates to far field in radiation mode. On the other hand, the microwave exists only around the LCX in surface mode. Although the conventional LCX-based sensor operates the LCX in only one mode to detect and classify an object, this paper introduces a simultaneous sensing technique using these two modes. Comparing the signals in both modes, the classification of an object can be estimated. The theory of the emitting modes of LCX and the developed sensor prototype are described. Experimental results are presented to show that the proposed sensing techniques are valid.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128703609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-04-17DOI: 10.1109/SAS.2014.6798971
Q. Mamun, M. Kaosar
This paper introduces a novel notion in the application protocol design paradigm for wireless sensor networks (WSNs). The traditional approaches of designing application protocols tend to focus primarily on developing the protocols first, and then using them on different topologies for implementation. We, however, argue that the logical topology of WSNs should be considered before designing application protocols. The argument is made on the basis that the logical topology of WSNs dictates the communication abstraction, the structure, and the hierarchy of the network. Thus, a well-designed logical topology helps in minimising the constraints of the WSNs and provides benefits to design various application protocols. In this paper we demonstrate how a well-designed logical topology influences the performances of protocols developed in WSNs. In doing so, the logical structure and the communication abstraction of the logical topology are used to design a number of application protocols, and their performances are evaluated.
{"title":"What is the first step in designing an application protocol for wireless sensor networks (WSNs)?","authors":"Q. Mamun, M. Kaosar","doi":"10.1109/SAS.2014.6798971","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798971","url":null,"abstract":"This paper introduces a novel notion in the application protocol design paradigm for wireless sensor networks (WSNs). The traditional approaches of designing application protocols tend to focus primarily on developing the protocols first, and then using them on different topologies for implementation. We, however, argue that the logical topology of WSNs should be considered before designing application protocols. The argument is made on the basis that the logical topology of WSNs dictates the communication abstraction, the structure, and the hierarchy of the network. Thus, a well-designed logical topology helps in minimising the constraints of the WSNs and provides benefits to design various application protocols. In this paper we demonstrate how a well-designed logical topology influences the performances of protocols developed in WSNs. In doing so, the logical structure and the communication abstraction of the logical topology are used to design a number of application protocols, and their performances are evaluated.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127979926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-04-17DOI: 10.1109/SAS.2014.6798976
B. Min, E. Matson, Anthony H. Smith, J. E. Dietz
Humans will replace human labor with new robotics technologies, especially where humans can be placed in danger situations or task domains. Evolving sensor and robotic technologies allow the transfer of humans from mundane, dangerous or difficult tasks, leaving robots to apply their specific capabilities to replace human's daily routines or hazardous tasks. Commonly, humans work in teams to resolve difficult scenarios, such as the aftermath of some natural or man-made disaster. Communication between each and every team member is critical to resolve relief efforts or remediation, in most disasters. This research presents robotic technology developed to remediate the long lead time to re-establish or develop network infrastructure in the case of a disaster situation. The specific application and test domain of this research, is with fire fighting.
{"title":"Using directional antennas as sensors to assist fire-fighting robots in large scale fires","authors":"B. Min, E. Matson, Anthony H. Smith, J. E. Dietz","doi":"10.1109/SAS.2014.6798976","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798976","url":null,"abstract":"Humans will replace human labor with new robotics technologies, especially where humans can be placed in danger situations or task domains. Evolving sensor and robotic technologies allow the transfer of humans from mundane, dangerous or difficult tasks, leaving robots to apply their specific capabilities to replace human's daily routines or hazardous tasks. Commonly, humans work in teams to resolve difficult scenarios, such as the aftermath of some natural or man-made disaster. Communication between each and every team member is critical to resolve relief efforts or remediation, in most disasters. This research presents robotic technology developed to remediate the long lead time to re-establish or develop network infrastructure in the case of a disaster situation. The specific application and test domain of this research, is with fire fighting.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128011387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-04-17DOI: 10.1109/SAS.2014.6798955
Moritz Schwing, Z. Chen, A. Scheuermann, N. Wagner
A high-frequency electromagnetic measurement technique is employed to investigate dielectric properties of a fine-grained soil. As a case study, a standardized compacted fine-grained soil was investigated using a coaxial transmission line cell in combination with vector network analyzer technique in a frequency range from 1 MHz to 3 GHz. The measurement results indicate that this type of sensor enables the broadband determination of soil dielectric spectra, i.e. the frequency dependent relative effective complex permittivity. Hence, with the introduced coaxial transmission line setup the dielectric relaxation behavior of the investigated soil can reliably characterize defined structural states. Moreover, it was found that dielectric material parameters at high frequencies are mainly related to the volume fractions of the soil phases, i.e. water content whereas at low frequencies to soil structure and density due to interface processes.
{"title":"Non-destructive coaxial transmission line measurements for dielectric soil characterization","authors":"Moritz Schwing, Z. Chen, A. Scheuermann, N. Wagner","doi":"10.1109/SAS.2014.6798955","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798955","url":null,"abstract":"A high-frequency electromagnetic measurement technique is employed to investigate dielectric properties of a fine-grained soil. As a case study, a standardized compacted fine-grained soil was investigated using a coaxial transmission line cell in combination with vector network analyzer technique in a frequency range from 1 MHz to 3 GHz. The measurement results indicate that this type of sensor enables the broadband determination of soil dielectric spectra, i.e. the frequency dependent relative effective complex permittivity. Hence, with the introduced coaxial transmission line setup the dielectric relaxation behavior of the investigated soil can reliably characterize defined structural states. Moreover, it was found that dielectric material parameters at high frequencies are mainly related to the volume fractions of the soil phases, i.e. water content whereas at low frequencies to soil structure and density due to interface processes.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128834708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-04-17DOI: 10.1109/SAS.2014.6798927
D. Gurkan, K. Vemuri, Parth Gala, A. Malishevskiy, Anand Daga
Emergency responses must utilize all information sources available to the emergency operations centers. University campuses are overflowing with information sources due to their infrastructure of information technology (IT). While serving a student body of thousands and sometimes 10s of thousands, every operation in a university involves an IT enterprise system. While enterprise systems store and operate on vast amounts of data about the “happenings around campus”, they are still disparate data systems with no integrated view. Furthermore, most systems operate on and store same information about campus and people while using various data models appropriate to their operational needs. In this paper, we propose an industry standard that can enable treatment of data sources as enterprise sensors in an emergency sensor network towards an integrated emergency management portal. The standard is IF-MAP (interface for metadata access point). IF-MAP is a technology suite with a thin client to enable a publish/subscribe communications paradigm that can integrate disparate data sources for a facilitation of data exchange in speeding emergency decision processes. We have implemented integration of sensor data feeds from the card access system, video feeds, and general facilities information at the University of Houston.
{"title":"Emergency management through sensors of enterprise systems","authors":"D. Gurkan, K. Vemuri, Parth Gala, A. Malishevskiy, Anand Daga","doi":"10.1109/SAS.2014.6798927","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798927","url":null,"abstract":"Emergency responses must utilize all information sources available to the emergency operations centers. University campuses are overflowing with information sources due to their infrastructure of information technology (IT). While serving a student body of thousands and sometimes 10s of thousands, every operation in a university involves an IT enterprise system. While enterprise systems store and operate on vast amounts of data about the “happenings around campus”, they are still disparate data systems with no integrated view. Furthermore, most systems operate on and store same information about campus and people while using various data models appropriate to their operational needs. In this paper, we propose an industry standard that can enable treatment of data sources as enterprise sensors in an emergency sensor network towards an integrated emergency management portal. The standard is IF-MAP (interface for metadata access point). IF-MAP is a technology suite with a thin client to enable a publish/subscribe communications paradigm that can integrate disparate data sources for a facilitation of data exchange in speeding emergency decision processes. We have implemented integration of sensor data feeds from the card access system, video feeds, and general facilities information at the University of Houston.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127748948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-04-17DOI: 10.1109/SAS.2014.6798931
Marco Politakis, Yusuke Hioka
An expansion is introduced to a technique for emphasising sound signals from one particular area that is surrounded by undesired noise sources. The proposed expansion allows sound signals to be extracted from areas located in different positions. The previous method uses multiple fixed beamformers to estimate the power spectral densities of two-dimensional areas and thus, calculate the necessary gain coefficients used to emphasise sources within the target region. The proposed expansion adjusts the beamformer directivity, in order to change the location of the target region. Validation was achieved by testing the performance within an anechoic chamber using two Kinect sensors equipped with microphone arrays. The expansion achieved noise attenuation and signal distortion performance equivalent to that of the previous method in different target regions.
{"title":"Expansion of sound source emphasis to multiple areas","authors":"Marco Politakis, Yusuke Hioka","doi":"10.1109/SAS.2014.6798931","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798931","url":null,"abstract":"An expansion is introduced to a technique for emphasising sound signals from one particular area that is surrounded by undesired noise sources. The proposed expansion allows sound signals to be extracted from areas located in different positions. The previous method uses multiple fixed beamformers to estimate the power spectral densities of two-dimensional areas and thus, calculate the necessary gain coefficients used to emphasise sources within the target region. The proposed expansion adjusts the beamformer directivity, in order to change the location of the target region. Validation was achieved by testing the performance within an anechoic chamber using two Kinect sensors equipped with microphone arrays. The expansion achieved noise attenuation and signal distortion performance equivalent to that of the previous method in different target regions.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123693708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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