Pub Date : 2013-07-11DOI: 10.1109/ISSCS.2013.6651203
F. Harris, E. Venosa, Xiaofei Chen, P. Kumar, C. Dick
Two-path half-band recursive filters are a standard structure used to realize efficient up-sampling or down-sampling filtering tasks [1]. In the most conventional implementation the two path filters form quadrature mirror filters offering simultaneous low-pass and high-pass characteristics from the sum and difference of the two paths. These filters are called self reciprocal (SR) and can be a Butterworth filter or an elliptic filter with coupled pass-band and stop-band ripple levels. The two path structure can also be used to implement Tchebyshev-I, Tchebyshev-II, and arbitrary ripple Elliptic filters. The latter options are not self reciprocal and require more arithmetic operations than do the SR options. In this paper we examine and compare the full set half band recursive filter types.
{"title":"Comparison of standard low pass filter types in two-path half-band IIR filter structures","authors":"F. Harris, E. Venosa, Xiaofei Chen, P. Kumar, C. Dick","doi":"10.1109/ISSCS.2013.6651203","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651203","url":null,"abstract":"Two-path half-band recursive filters are a standard structure used to realize efficient up-sampling or down-sampling filtering tasks [1]. In the most conventional implementation the two path filters form quadrature mirror filters offering simultaneous low-pass and high-pass characteristics from the sum and difference of the two paths. These filters are called self reciprocal (SR) and can be a Butterworth filter or an elliptic filter with coupled pass-band and stop-band ripple levels. The two path structure can also be used to implement Tchebyshev-I, Tchebyshev-II, and arbitrary ripple Elliptic filters. The latter options are not self reciprocal and require more arithmetic operations than do the SR options. In this paper we examine and compare the full set half band recursive filter types.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117320228","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 : 2013-07-11DOI: 10.1109/ISSCS.2013.6651253
C. V. Marian, V. Croitoru, D. Oprea
In telecommunication networks, a mechanism (MPLS Multiprotocol Label Switching) is used to enable data circuit switching comportment built on a packet based network. This paper proposes, in a network of interconnected nodes, a packet routing/switching system by which label switched routing is performed within a hierarchy of LSP (Label-Switched Path) previously defined or provisioned. Instead of transmitting the entire label stack, using one label for each LSP in the hierarchy, a single LSP label is transmitted together with a list of component identifiers from which the full LSP labels can be locally determined at each node.
{"title":"Proposed packet routing system based on label switched method","authors":"C. V. Marian, V. Croitoru, D. Oprea","doi":"10.1109/ISSCS.2013.6651253","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651253","url":null,"abstract":"In telecommunication networks, a mechanism (MPLS Multiprotocol Label Switching) is used to enable data circuit switching comportment built on a packet based network. This paper proposes, in a network of interconnected nodes, a packet routing/switching system by which label switched routing is performed within a hierarchy of LSP (Label-Switched Path) previously defined or provisioned. Instead of transmitting the entire label stack, using one label for each LSP in the hierarchy, a single LSP label is transmitted together with a list of component identifiers from which the full LSP labels can be locally determined at each node.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124000471","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 : 2013-07-11DOI: 10.1109/ISSCS.2013.6651251
R. Matei
This paper approaches an analytical design method for a type of 2D band-pass circularly-symmetric Gaussian-shaped recursive filters. The method is based on a Gaussian prototype filter, whose transfer function is transformed using a specific 1D to 2D frequency mapping. An efficient pre-warping is applied before using the bilinear transform, which allows to obtain filters having a central frequency close to the frequency plane margins, and yet with an accurate circular shape, without any distortions. Finally the filter matrices are obtained, which include the filter parameters - central frequency and bandwidth.
{"title":"Parametric 2D Gaussian circular band-pass filters","authors":"R. Matei","doi":"10.1109/ISSCS.2013.6651251","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651251","url":null,"abstract":"This paper approaches an analytical design method for a type of 2D band-pass circularly-symmetric Gaussian-shaped recursive filters. The method is based on a Gaussian prototype filter, whose transfer function is transformed using a specific 1D to 2D frequency mapping. An efficient pre-warping is applied before using the bilinear transform, which allows to obtain filters having a central frequency close to the frequency plane margins, and yet with an accurate circular shape, without any distortions. Finally the filter matrices are obtained, which include the filter parameters - central frequency and bandwidth.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120885764","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 : 2013-07-11DOI: 10.1109/ISSCS.2013.6651239
I. Pavaloi, E. Musca, Bolea Speranta-Cecilia, F. Rotaru
A methodology and an application for acoustic analysis of Romanian language vowels, for different emotional states and different vowel location in words, are presented. The application can be useful for expressivity analysis, speech synthesis and the speech to text approach. We focus on the data structures inside the software for annotation analysis of speech files. The formant statistical characteristic analysis of vowels on file subclasses selected by user is performed. The application allows refining the emotional state analysis at the level of vowels.
{"title":"Acoustic analysis methodology on Romanian language vowels for different emotional states","authors":"I. Pavaloi, E. Musca, Bolea Speranta-Cecilia, F. Rotaru","doi":"10.1109/ISSCS.2013.6651239","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651239","url":null,"abstract":"A methodology and an application for acoustic analysis of Romanian language vowels, for different emotional states and different vowel location in words, are presented. The application can be useful for expressivity analysis, speech synthesis and the speech to text approach. We focus on the data structures inside the software for annotation analysis of speech files. The formant statistical characteristic analysis of vowels on file subclasses selected by user is performed. The application allows refining the emotional state analysis at the level of vowels.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115559649","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 : 2013-07-11DOI: 10.1109/ISSCS.2013.6651258
Yao Liu, F. Maloberti
This paper studies features and limits of an algorithmic ADC implemented with a single operational amplifier. Since the technique can be profitable when the resolution reaches more than 12-bit compared with SAR algorithm, it is necessary to ensure proper specification of active and passive elements or to compensate for these limits. It is shown that reconfigurability of the architecture allows measuring offset and capacitor mismatch for a background or a foreground calibration.
{"title":"Single Op-Amp algorithmic converter and its offset and mismatch compensation","authors":"Yao Liu, F. Maloberti","doi":"10.1109/ISSCS.2013.6651258","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651258","url":null,"abstract":"This paper studies features and limits of an algorithmic ADC implemented with a single operational amplifier. Since the technique can be profitable when the resolution reaches more than 12-bit compared with SAR algorithm, it is necessary to ensure proper specification of active and passive elements or to compensate for these limits. It is shown that reconfigurability of the architecture allows measuring offset and capacitor mismatch for a background or a foreground calibration.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131468867","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 : 2013-07-11DOI: 10.1109/ISSCS.2013.6651242
O. Datcu, M. Stanciu, R. Tauleigne
This article aims to experimentally prove the feasibility of an impulsive observer in order to recover the secret information embedded in a hybrid chaotic system. The first challenge of such a communication scheme is to synchronize the analog circuits that compose it. That is the stage that this article fulfils and presents.
{"title":"Experimental impulsive observer with colpitts oscillators","authors":"O. Datcu, M. Stanciu, R. Tauleigne","doi":"10.1109/ISSCS.2013.6651242","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651242","url":null,"abstract":"This article aims to experimentally prove the feasibility of an impulsive observer in order to recover the secret information embedded in a hybrid chaotic system. The first challenge of such a communication scheme is to synchronize the analog circuits that compose it. That is the stage that this article fulfils and presents.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131937182","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 : 2013-07-11DOI: 10.1109/ISSCS.2013.6651267
Inci Zaim Gokbay, Murat Gezer, U. Guz, H. Gurkan, B. Yarman
In this work, a new biomedical image compression method is proposed based on the classified energy and pattern blocks (CEPB). CEPB based compression method is specifically applied on the Computed Tomography (CT) images and the evaluation results are presented. Essentially, the CEPB is uniquely designed and structured codebook which is located on the both the transmitter and receiver part of a communication system in order to implement encoding and decoding processes. The encoding parameters are block scaling coefficient (BSC) and the index numbers of energy (IE) and pattern blocks (IP) determined for each block of the input images based on the CEPB. The evaluation results show that the newly proposed method provides considerable image compression ratios and image quality.
{"title":"A novel computed tomography image compression method based on classified energy and pattern blocks","authors":"Inci Zaim Gokbay, Murat Gezer, U. Guz, H. Gurkan, B. Yarman","doi":"10.1109/ISSCS.2013.6651267","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651267","url":null,"abstract":"In this work, a new biomedical image compression method is proposed based on the classified energy and pattern blocks (CEPB). CEPB based compression method is specifically applied on the Computed Tomography (CT) images and the evaluation results are presented. Essentially, the CEPB is uniquely designed and structured codebook which is located on the both the transmitter and receiver part of a communication system in order to implement encoding and decoding processes. The encoding parameters are block scaling coefficient (BSC) and the index numbers of energy (IE) and pattern blocks (IP) determined for each block of the input images based on the CEPB. The evaluation results show that the newly proposed method provides considerable image compression ratios and image quality.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125679787","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 : 2013-07-11DOI: 10.1109/ISSCS.2013.6651228
C. Stanciu, S. Ciochină
The stereophonic systems create the illusion of audio directionality using independent channels with a standard configuration consisting of two microphones and two speakers. The basic associated mathematical model used to correct the acoustic echo that affects the system has two-input/ two-output real random variables with four adaptive filters. An important simplification to this scheme is the widely linear (WL) model which uses a single-input/ single-output system with complex valued random variables (CRVs) and only one adaptive filter. In order to demonstrate the functionality, the recursive least-squares (RLS) adaptive algorithm is used. The RLS is conveniently combined with the dichotomous coordinate descent (DCD) algorithm in order to greatly reduce the matrix inversion arithmetic complexity and an aggregate of two filters (with transfer logic - TL) is used to considerably improve performance in high disturbance situations such as double talk.
{"title":"A robust dual-path DCD-RLS algorithm for stereophonic acoustic echo cancellation","authors":"C. Stanciu, S. Ciochină","doi":"10.1109/ISSCS.2013.6651228","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651228","url":null,"abstract":"The stereophonic systems create the illusion of audio directionality using independent channels with a standard configuration consisting of two microphones and two speakers. The basic associated mathematical model used to correct the acoustic echo that affects the system has two-input/ two-output real random variables with four adaptive filters. An important simplification to this scheme is the widely linear (WL) model which uses a single-input/ single-output system with complex valued random variables (CRVs) and only one adaptive filter. In order to demonstrate the functionality, the recursive least-squares (RLS) adaptive algorithm is used. The RLS is conveniently combined with the dichotomous coordinate descent (DCD) algorithm in order to greatly reduce the matrix inversion arithmetic complexity and an aggregate of two filters (with transfer logic - TL) is used to considerably improve performance in high disturbance situations such as double talk.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124287071","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 : 2013-07-11DOI: 10.1109/ISSCS.2013.6651170
D. Neacşu
A impressive series of new products has emerged in response to the increasing number of entertainment and workshop systems powered up from the vehicle's low voltage battery. As most of these products feature the same typical power architecture, new solutions with reduced component count are looked for. They are expected to reduce cost, reduce loss, and improve reliability. This paper makes a brief review of the topic and discusses new topologies. Results are included for a 100W converter.
{"title":"Power converter topologies with reduced component count for automotive AC auxiliary power","authors":"D. Neacşu","doi":"10.1109/ISSCS.2013.6651170","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651170","url":null,"abstract":"A impressive series of new products has emerged in response to the increasing number of entertainment and workshop systems powered up from the vehicle's low voltage battery. As most of these products feature the same typical power architecture, new solutions with reduced component count are looked for. They are expected to reduce cost, reduce loss, and improve reliability. This paper makes a brief review of the topic and discusses new topologies. Results are included for a 100W converter.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"54 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120855172","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 : 2013-07-11DOI: 10.1109/ISSCS.2013.6651260
Roxana Roşu, C. Rusu
The main objective of this work is the implementation of a new type of spectral analysis, that is more efficient and that can be more easily read than the spectrogram. This analysis should be used for detecting the intruders from a wildlife environment. It is called sparsogram and its main advantage is that it displays only the important spectral components of a given sound. In this way, one can easily see the dominant frequency bands of different audio signals. Later on, a classification method is implemented based on these frequency measurements on the sparsogram, which assigns the sounds from a natural environment to different classes and subclasses of intruders.
{"title":"A sparsogram implementation for wildlife intruder detection","authors":"Roxana Roşu, C. Rusu","doi":"10.1109/ISSCS.2013.6651260","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651260","url":null,"abstract":"The main objective of this work is the implementation of a new type of spectral analysis, that is more efficient and that can be more easily read than the spectrogram. This analysis should be used for detecting the intruders from a wildlife environment. It is called sparsogram and its main advantage is that it displays only the important spectral components of a given sound. In this way, one can easily see the dominant frequency bands of different audio signals. Later on, a classification method is implemented based on these frequency measurements on the sparsogram, which assigns the sounds from a natural environment to different classes and subclasses of intruders.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125065708","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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