Pub Date : 2014-12-01DOI: 10.1109/APSIPA.2014.7041546
Jui-Feng Yeh, C. Lee, Yi-Shiuan Tan, Liang-Chih Yu
The topic information of conversational content is important for continuation with communication, so topic detection and tracking is one of important research. Due to there are many topic transform occurring frequently in long time communication, and the conversation maybe have many topics, so it's important to detect different topics in conversational content. This paper detects topic information by using agglomerative clustering of utterances and Dynamic Latent Dirichlet Allocation topic model, uses proportion of verb and noun to analyze similarity between utterances and cluster all utterances in conversational content by agglomerative clustering algorithm. The topic structure of conversational content is friability, so we use speech act information and gets the hypernym information by E-HowNet that obtains robustness of word categories. Latent Dirichlet Allocation topic model is used to detect topic in file units, it just can detect only one topic if uses it in conversational content, because of there are many topics in conversational content frequently, and also uses speech act information and hypernym information to train the latent Dirichlet allocation models, then uses trained models to detect different topic information in conversational content. For evaluating the proposed method, support vector machine is developed for comparison. According to the experimental results, we can find the proposed method outperforms the approach based on support vector machine in topic detection and tracking in spoken dialogue.
{"title":"Topic model allocation of conversational dialogue records by Latent Dirichlet Allocation","authors":"Jui-Feng Yeh, C. Lee, Yi-Shiuan Tan, Liang-Chih Yu","doi":"10.1109/APSIPA.2014.7041546","DOIUrl":"https://doi.org/10.1109/APSIPA.2014.7041546","url":null,"abstract":"The topic information of conversational content is important for continuation with communication, so topic detection and tracking is one of important research. Due to there are many topic transform occurring frequently in long time communication, and the conversation maybe have many topics, so it's important to detect different topics in conversational content. This paper detects topic information by using agglomerative clustering of utterances and Dynamic Latent Dirichlet Allocation topic model, uses proportion of verb and noun to analyze similarity between utterances and cluster all utterances in conversational content by agglomerative clustering algorithm. The topic structure of conversational content is friability, so we use speech act information and gets the hypernym information by E-HowNet that obtains robustness of word categories. Latent Dirichlet Allocation topic model is used to detect topic in file units, it just can detect only one topic if uses it in conversational content, because of there are many topics in conversational content frequently, and also uses speech act information and hypernym information to train the latent Dirichlet allocation models, then uses trained models to detect different topic information in conversational content. For evaluating the proposed method, support vector machine is developed for comparison. According to the experimental results, we can find the proposed method outperforms the approach based on support vector machine in topic detection and tracking in spoken dialogue.","PeriodicalId":231382,"journal":{"name":"Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2014 Asia-Pacific","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115754286","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 : 2014-12-01DOI: 10.1109/APSIPA.2014.7041671
Yudong Liang, Jinjun Wang, Shizhou Zhang, Yihong Gong
This paper proposes a novel neural network learning the essential mapping function between the low resolution and high resolution image for Image superresolution problem. In our approach, patch recurrence property of small patches in natural image are utilized as a prior to train the network. An autoencoder neutral network is designed to reconstruct the high resolution patches. The constraint that the output of the coding part should be similar as the corresponding high resolution patches is imposed to ameliorate the illness nature of the superresolution problem. In fact, the degeneration mapping from the high resolution image to the low resolution image is also integrated in the network. Both visual improvements and objective assessments are demonstrated on true images.
{"title":"Learning visual co-occurrence with auto-encoder for image super-resolution","authors":"Yudong Liang, Jinjun Wang, Shizhou Zhang, Yihong Gong","doi":"10.1109/APSIPA.2014.7041671","DOIUrl":"https://doi.org/10.1109/APSIPA.2014.7041671","url":null,"abstract":"This paper proposes a novel neural network learning the essential mapping function between the low resolution and high resolution image for Image superresolution problem. In our approach, patch recurrence property of small patches in natural image are utilized as a prior to train the network. An autoencoder neutral network is designed to reconstruct the high resolution patches. The constraint that the output of the coding part should be similar as the corresponding high resolution patches is imposed to ameliorate the illness nature of the superresolution problem. In fact, the degeneration mapping from the high resolution image to the low resolution image is also integrated in the network. Both visual improvements and objective assessments are demonstrated on true images.","PeriodicalId":231382,"journal":{"name":"Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2014 Asia-Pacific","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123493236","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 : 2014-12-01DOI: 10.1109/APSIPA.2014.7041716
Quang-Trung Hoang, X. Tran
This paper considers the design of a cross-layer medium access control (MAC) protocol for wireless ad hoc cooperative networks. Specifically, we redesign the message exchange process of the MAC protocol previously proposed by Shan et al. By using a HRP signal with shorter length the proposed protocol can reduce the protocol overhead and thus improve the transmission reliability. We also propose to use only one HRP signal to resolve the collision among the helpers with the same cooperative rate. The proposed protocol achieves higher path throughput and lower end-to-end packet latency compared with that by Shan et al. and the traditional IEEE 802.11 MAC protocol.
{"title":"Improved cross-layer cooperative MAC protocol for wireless ad hoc networks","authors":"Quang-Trung Hoang, X. Tran","doi":"10.1109/APSIPA.2014.7041716","DOIUrl":"https://doi.org/10.1109/APSIPA.2014.7041716","url":null,"abstract":"This paper considers the design of a cross-layer medium access control (MAC) protocol for wireless ad hoc cooperative networks. Specifically, we redesign the message exchange process of the MAC protocol previously proposed by Shan et al. By using a HRP signal with shorter length the proposed protocol can reduce the protocol overhead and thus improve the transmission reliability. We also propose to use only one HRP signal to resolve the collision among the helpers with the same cooperative rate. The proposed protocol achieves higher path throughput and lower end-to-end packet latency compared with that by Shan et al. and the traditional IEEE 802.11 MAC protocol.","PeriodicalId":231382,"journal":{"name":"Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2014 Asia-Pacific","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123714825","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 : 2014-12-01DOI: 10.1109/APSIPA.2014.7041611
Fan Chen, Yao Qin, Hongjie He
To improve the ability against different counterfeiting attacks, a watermarking algorithm is proposed for binary-text image (BTI) authentication. To protect the uniform regions in BTI, the watermark information of a fixed-size block is generated according to the content of it and divided into three parts. One part is embedded in the flippable pixels of itself, and the other two parts are respectively embedded in the flippable pixels of other two blocks in BTI, which are randomly chosen based on the secret key. This strategy can not only introduce the block-wise dependence, but also make it possible for the authentication watermark of a uniform block to be embedded in the BTI. In the tamper detection stage, a multi-block based statistic detection method is designed to verify the validity of an image block. Simulation results show that the proposed algorithm can achieve a good imperceptibility and have an ability resisting the maliciously attacks such as collage attack, delete tampering, replace tampering etc.
{"title":"Multi-block dependency based watermarking scheme for binary-text image authentication","authors":"Fan Chen, Yao Qin, Hongjie He","doi":"10.1109/APSIPA.2014.7041611","DOIUrl":"https://doi.org/10.1109/APSIPA.2014.7041611","url":null,"abstract":"To improve the ability against different counterfeiting attacks, a watermarking algorithm is proposed for binary-text image (BTI) authentication. To protect the uniform regions in BTI, the watermark information of a fixed-size block is generated according to the content of it and divided into three parts. One part is embedded in the flippable pixels of itself, and the other two parts are respectively embedded in the flippable pixels of other two blocks in BTI, which are randomly chosen based on the secret key. This strategy can not only introduce the block-wise dependence, but also make it possible for the authentication watermark of a uniform block to be embedded in the BTI. In the tamper detection stage, a multi-block based statistic detection method is designed to verify the validity of an image block. Simulation results show that the proposed algorithm can achieve a good imperceptibility and have an ability resisting the maliciously attacks such as collage attack, delete tampering, replace tampering etc.","PeriodicalId":231382,"journal":{"name":"Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2014 Asia-Pacific","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125025935","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 : 2014-12-01DOI: 10.1109/APSIPA.2014.7041637
Bin Wu, Jinsong Zhang, Yanlu Xie
This paper attempts to provide some insights about the relationship between the differentiability and the classification importance of consonants in Chinese speech communication. The two characteristics can be modelled by the perceptual distance and the functional load respectively. We have a clustering analysis of Chinese consonants based on functional load (FL) relied on mutual information (MI) between the text and its phoneme transcription. Then we compare our clustering result with that based on the perceptual distance by articulation tests. By experimenting on the Chinese newspaper corpus with millions of sentences, we find most phonemes at the same place of articulation with different manners tend to have large FLs pairwise. It is consistent with the result that those phonemes tend to have long perceptual distance pairwise.
{"title":"A clustering analysis of Chinese consonants based on functional load","authors":"Bin Wu, Jinsong Zhang, Yanlu Xie","doi":"10.1109/APSIPA.2014.7041637","DOIUrl":"https://doi.org/10.1109/APSIPA.2014.7041637","url":null,"abstract":"This paper attempts to provide some insights about the relationship between the differentiability and the classification importance of consonants in Chinese speech communication. The two characteristics can be modelled by the perceptual distance and the functional load respectively. We have a clustering analysis of Chinese consonants based on functional load (FL) relied on mutual information (MI) between the text and its phoneme transcription. Then we compare our clustering result with that based on the perceptual distance by articulation tests. By experimenting on the Chinese newspaper corpus with millions of sentences, we find most phonemes at the same place of articulation with different manners tend to have large FLs pairwise. It is consistent with the result that those phonemes tend to have long perceptual distance pairwise.","PeriodicalId":231382,"journal":{"name":"Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2014 Asia-Pacific","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121984583","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 : 2014-12-01DOI: 10.1109/APSIPA.2014.7041690
Withawat Tangtrongpairoj, T. Higashino, M. Okada
Radio over Fiber (RoF) is a promising solution for wireless access services by transferring the heterogeneous radio signal via the optical fiber link. However, RoF devices have nonlinear characteristics which create intermodulation products in system. The intermodulation distortion (IMD) interferes uplink RF signals in the presence of coupling between downlink and uplink antennas in the base station (BS). This paper proposed the performance evaluation due to coupled downlink interfere to uplink antenna. The carrier to distortion plus noise ratio (CDNR) is evaluated for all combinations. By using NS3 network simulator, the result shows the best combination achieves better performance. Which coupled downlink interfere in uplink signal can be reduced when amount of downlink packet is decreased.
{"title":"Quality-based channel selection in multi-channel radio-over-fiber system","authors":"Withawat Tangtrongpairoj, T. Higashino, M. Okada","doi":"10.1109/APSIPA.2014.7041690","DOIUrl":"https://doi.org/10.1109/APSIPA.2014.7041690","url":null,"abstract":"Radio over Fiber (RoF) is a promising solution for wireless access services by transferring the heterogeneous radio signal via the optical fiber link. However, RoF devices have nonlinear characteristics which create intermodulation products in system. The intermodulation distortion (IMD) interferes uplink RF signals in the presence of coupling between downlink and uplink antennas in the base station (BS). This paper proposed the performance evaluation due to coupled downlink interfere to uplink antenna. The carrier to distortion plus noise ratio (CDNR) is evaluated for all combinations. By using NS3 network simulator, the result shows the best combination achieves better performance. Which coupled downlink interfere in uplink signal can be reduced when amount of downlink packet is decreased.","PeriodicalId":231382,"journal":{"name":"Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2014 Asia-Pacific","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122797541","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 : 2014-12-01DOI: 10.1109/APSIPA.2014.7041689
Jinwei Sun, Fei Ma, Boyan Huang, Liang Wen
Narrowband active noise control (ANC) systems enjoy good performance where sinusoidal signals dominate in the primary noise, on condition that a reference signal of the same frequencies with the primary noise is given. However, frequencies of the reference signal provided by nonacoustic sensors are usually different from that of the primary noise due to temperature changes, aging, etc. Such frequency mismatch (FM) will make the narrowband ANC systems unable to suppress the primary noise effectively, even render them useless. In this paper, we propose a new narrowband ANC system that integrated with a frequency estimation subsystem. The frequency estimation is obtained from a spectrum computation based on an adaptive linear prediction filter. The estimated frequencies are used by the cosine signal generator to produce a more accurate reference signal to the main controller, thus the performance deterioration caused by FM can be mitigated. The effectiveness of the proposed system has been confirmed by numerous simulations.
{"title":"A narrowband active noise control system with frequency mismatch compensation","authors":"Jinwei Sun, Fei Ma, Boyan Huang, Liang Wen","doi":"10.1109/APSIPA.2014.7041689","DOIUrl":"https://doi.org/10.1109/APSIPA.2014.7041689","url":null,"abstract":"Narrowband active noise control (ANC) systems enjoy good performance where sinusoidal signals dominate in the primary noise, on condition that a reference signal of the same frequencies with the primary noise is given. However, frequencies of the reference signal provided by nonacoustic sensors are usually different from that of the primary noise due to temperature changes, aging, etc. Such frequency mismatch (FM) will make the narrowband ANC systems unable to suppress the primary noise effectively, even render them useless. In this paper, we propose a new narrowband ANC system that integrated with a frequency estimation subsystem. The frequency estimation is obtained from a spectrum computation based on an adaptive linear prediction filter. The estimated frequencies are used by the cosine signal generator to produce a more accurate reference signal to the main controller, thus the performance deterioration caused by FM can be mitigated. The effectiveness of the proposed system has been confirmed by numerous simulations.","PeriodicalId":231382,"journal":{"name":"Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2014 Asia-Pacific","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126276962","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 : 2014-12-01DOI: 10.1109/APSIPA.2014.7041638
Fuming Fang, T. Shinozaki, Takao Kobayashi
A switch-to-speech interface can provide a means of interactive communication as a support system for people with disabilities with voluntary movements. Any motion of a part of the body, such as eye movements, can be used for the switch input. The number of possible switch operations varies from person to person, but the bandwidth is generally quite limited. Therefore, efficient input protocols are needed to map the switch operations to pronunciations. Meanwhile, the protocol must be easily learnable so that anyone can use it. To this end, we propose a protocol recommendation method that can accept individual requirements in switch operations. This method suggests a customized protocol for each user of the interface that is both speedy to enter and easy to remember. The two main ideas in the protocol design are utilizing the knowledge about the alphabet table that everyone already knows and improving the input speed and learnability by allowing ambiguity in the switch to pronunciation conversion. The conversion errors due to the ambiguity are offset by an N-gram language model. The performance of the protocols was evaluated through simulations and the measured values obtained from research participants, and the advantage of the proposed method is shown.
{"title":"An automatic input protocol recommendation method for tailored switch-to-speech communication aid systems","authors":"Fuming Fang, T. Shinozaki, Takao Kobayashi","doi":"10.1109/APSIPA.2014.7041638","DOIUrl":"https://doi.org/10.1109/APSIPA.2014.7041638","url":null,"abstract":"A switch-to-speech interface can provide a means of interactive communication as a support system for people with disabilities with voluntary movements. Any motion of a part of the body, such as eye movements, can be used for the switch input. The number of possible switch operations varies from person to person, but the bandwidth is generally quite limited. Therefore, efficient input protocols are needed to map the switch operations to pronunciations. Meanwhile, the protocol must be easily learnable so that anyone can use it. To this end, we propose a protocol recommendation method that can accept individual requirements in switch operations. This method suggests a customized protocol for each user of the interface that is both speedy to enter and easy to remember. The two main ideas in the protocol design are utilizing the knowledge about the alphabet table that everyone already knows and improving the input speed and learnability by allowing ambiguity in the switch to pronunciation conversion. The conversion errors due to the ambiguity are offset by an N-gram language model. The performance of the protocols was evaluated through simulations and the measured values obtained from research participants, and the advantage of the proposed method is shown.","PeriodicalId":231382,"journal":{"name":"Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2014 Asia-Pacific","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126306398","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 : 2014-12-01DOI: 10.1109/APSIPA.2014.7041567
M. Mimura, Tatsuya Kawahara
Unsupervised speaker adaptation of Deep Neural Network (DNN) is investigated for lecture transcription tasks, in which a single speaker gives a long speech and thus speaker adaptation is important. The proposed method selects similar speakers to the test data (test speaker) from the training database, which are used for retraining the baseline DNN. Several speaker characteristic features are defined for the speaker similarity measure. The feature based on Universal Background Model (UBM) and principal component analysis (PCA) achieves the best performance, resulting in a significant improvement from the baseline DNN and also from the adapted GMM-HMM system. The method is combined with a naive adaptation method using the initial ASR hypothesis of the test data, and an additional improvement is achieved.
{"title":"Unsupervised speaker adaptation of DNN-HMM by selecting similar speakers for lecture transcription","authors":"M. Mimura, Tatsuya Kawahara","doi":"10.1109/APSIPA.2014.7041567","DOIUrl":"https://doi.org/10.1109/APSIPA.2014.7041567","url":null,"abstract":"Unsupervised speaker adaptation of Deep Neural Network (DNN) is investigated for lecture transcription tasks, in which a single speaker gives a long speech and thus speaker adaptation is important. The proposed method selects similar speakers to the test data (test speaker) from the training database, which are used for retraining the baseline DNN. Several speaker characteristic features are defined for the speaker similarity measure. The feature based on Universal Background Model (UBM) and principal component analysis (PCA) achieves the best performance, resulting in a significant improvement from the baseline DNN and also from the adapted GMM-HMM system. The method is combined with a naive adaptation method using the initial ASR hypothesis of the test data, and an additional improvement is achieved.","PeriodicalId":231382,"journal":{"name":"Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2014 Asia-Pacific","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125828469","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 : 2014-12-01DOI: 10.1109/APSIPA.2014.7041561
Ryo Matsuoka, T. Baba, M. Okuda
We present an algorithm for the constrained design of FIR filters with sparse coefficients. In general, the filter design approach aims to minimize a filter order and maximize the filter performance. Although the FIR filter coefficients designed by the least squares method is optimal in the least squares sense, it is not necessarily optimal among the set of filters with the same number of multipliers, that is, less mean squared error can be achieved by a filter that has the same number of multipliers, but has longer impulse response with some zero-valued entries. Our method minimizes the number of nonzero entries in the impulse response together with the least squares error of its frequency response. In addition, we incorporate some constraints to the design and realize better performance than conventional constrained least squares design.
{"title":"Constrained design of FIR filters with sparse coefficients","authors":"Ryo Matsuoka, T. Baba, M. Okuda","doi":"10.1109/APSIPA.2014.7041561","DOIUrl":"https://doi.org/10.1109/APSIPA.2014.7041561","url":null,"abstract":"We present an algorithm for the constrained design of FIR filters with sparse coefficients. In general, the filter design approach aims to minimize a filter order and maximize the filter performance. Although the FIR filter coefficients designed by the least squares method is optimal in the least squares sense, it is not necessarily optimal among the set of filters with the same number of multipliers, that is, less mean squared error can be achieved by a filter that has the same number of multipliers, but has longer impulse response with some zero-valued entries. Our method minimizes the number of nonzero entries in the impulse response together with the least squares error of its frequency response. In addition, we incorporate some constraints to the design and realize better performance than conventional constrained least squares design.","PeriodicalId":231382,"journal":{"name":"Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2014 Asia-Pacific","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129978061","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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