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2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing最新文献

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Unified framework for single channel speech enhancement 统一的单通道语音增强框架
2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2009-10-23 DOI: 10.1109/PACRIM.2009.5291253
I. Tashev, A. Lovitt, A. Acero
{"title":"Unified framework for single channel speech enhancement","authors":"I. Tashev, A. Lovitt, A. Acero","doi":"10.1109/PACRIM.2009.5291253","DOIUrl":"https://doi.org/10.1109/PACRIM.2009.5291253","url":null,"abstract":"In this paper we describe a generic architecture for single channel speech enhancement. We assume processing in frequency domain and suppression based speech enhancement methods. The framework consists of a two stage voice activity detector, noise variance estimator, a suppression rule, and an uncertain presence of the speech signal modifier. The evaluation corpus is a synthetic mixture of a clean speech (TIMIT database) and in-car recorded noises. Using the framework multiple speech enhancement algorithms are tuned for maximum performance. We propose a formalized procedure for automated tuning of these algorithms. The optimization criterion is a weighted sum of the mean opinion score (PESQ-MOS), signalto-noise-ratio (SNR), log-spectral distance (LSD), and mean square error (MSE). The proposed framework provides a complete speech enhancement chain and can be used for evaluation and tuning of other suppression rules and voice activity detector algorithms.","PeriodicalId":217751,"journal":{"name":"2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125446582","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}
引用次数: 23
New processor array architecture for scalable radix 2 Montgomery modular multiplication algorithm 新的处理器阵列架构可扩展的基数2蒙哥马利模乘法算法
2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2009-10-23 DOI: 10.1109/PACRIM.2009.5291345
Atef Ibrahim, F. Gebali, H. Elsimary, A. Nassar
{"title":"New processor array architecture for scalable radix 2 Montgomery modular multiplication algorithm","authors":"Atef Ibrahim, F. Gebali, H. Elsimary, A. Nassar","doi":"10.1109/PACRIM.2009.5291345","DOIUrl":"https://doi.org/10.1109/PACRIM.2009.5291345","url":null,"abstract":"This paper presents a new processor array architecture for scalable radix2 Montgomery modular multiplication algorithm. In this architecture, the multiplicand and the modulus words are allocated to each processing element rather than pipelined between the processing elements as in the previous architecture extracted by Ç . Koç, and also the multiplier bits are fed serially to the first processing element of the processor array every odd clock cycle. By analyzing this architecture, we found that it has a better performance - in terms of area and speed - than the previous architecture extracted by Ç. Koç.","PeriodicalId":217751,"journal":{"name":"2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127004594","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}
引用次数: 2
Non-uniform sampling point selection in OFDM receiver with fractional sampling 分数采样OFDM接收机的非均匀采样点选择
2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2009-10-23 DOI: 10.1109/PACRIM.2009.5291260
H. Nishimura, M. Inamori, Y. Sanada, M. Ghavami
{"title":"Non-uniform sampling point selection in OFDM receiver with fractional sampling","authors":"H. Nishimura, M. Inamori, Y. Sanada, M. Ghavami","doi":"10.1109/PACRIM.2009.5291260","DOIUrl":"https://doi.org/10.1109/PACRIM.2009.5291260","url":null,"abstract":"To achieve diversity with a single antenna, a fractional sampling (FS) scheme in OFDM has been proposed. In the previous literatures for FS, the sampling interval is fixed. An oversampling rate needs to be large to obtain more path diversity gain through FS. This leads to the increase of a circuit size for demodulation in a mobile terminal. In this paper, sampling point selection according to the frequency response of a channel has been proposed. The proposed scheme reduces the number of demodulation branches to a half as compared to the conventional FS scheme to achieve the same bit error rate. Moreover, by eliminating the specific sets of the sampling points, the computational complexity for sampling point selection is also reduced by a factor of 2.","PeriodicalId":217751,"journal":{"name":"2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134582675","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}
引用次数: 10
Ultrasound influence on impression evaluation of music 超声对音乐印象评价的影响
2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2009-10-23 DOI: 10.1109/PACRIM.2009.5291285
Masakazu Higuchi, M. Nakamura, Yasuhiro Toraichi, K. Toraichi, Yasuo Morooka, K. Katagishi, N. Otsu, H. Murakami
{"title":"Ultrasound influence on impression evaluation of music","authors":"Masakazu Higuchi, M. Nakamura, Yasuhiro Toraichi, K. Toraichi, Yasuo Morooka, K. Katagishi, N. Otsu, H. Murakami","doi":"10.1109/PACRIM.2009.5291285","DOIUrl":"https://doi.org/10.1109/PACRIM.2009.5291285","url":null,"abstract":"We have investigated whether ultrasound changes our audible impressions when we listen tomusic or not. To solve this question, we verify that there might be a mechanism perceiving ultrasound by a physiological pre-experiment, and review discrepancy in subjective estimations for two kinds of sounds played back with and without ultrasound by a psychological experiment. In this paper, we study whether we can distinguish between the two of those sounds by subjective estimations or not by using discriminant analysis in multivariate analysis technique. As a result, we discriminated those two kinds of sounds with a high rate on drum music. This result suggests that ultrasound affects our audible impressions when we listen to music.","PeriodicalId":217751,"journal":{"name":"2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132800783","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}
引用次数: 1
A cross-layer-based rate control method for distributed video coding 基于跨层的分布式视频编码速率控制方法
2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2009-10-23 DOI: 10.1109/PACRIM.2009.5291254
C. Kim, D. Suh
{"title":"A cross-layer-based rate control method for distributed video coding","authors":"C. Kim, D. Suh","doi":"10.1109/PACRIM.2009.5291254","DOIUrl":"https://doi.org/10.1109/PACRIM.2009.5291254","url":null,"abstract":"The conventional rate control method does not take channel loss into consideration. Thus, quality of service (QoS) cannot be guaranteed if packet loss occurs. To guarantee QoS in wireless communication environments that include channel loss, the PLR(packet loss ratio) must be taken into consideration. In this paper, we propose a new rate control algorithm that takes the PLR into consideration by using a cross-layer approach. The proposed method modifies the quantization parameter in accordance with the PLR. After the encoder determines available rates by obtaining the PLR, it decides the quantization parameter for encoding video to available rates and transmits this information to the decoder. This means that a smaller amount of data is sent at a higher puncturing rate. Therefore, the probability of successful decoding is increased when packet loss occurs.","PeriodicalId":217751,"journal":{"name":"2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129400139","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}
引用次数: 1
Implementation of virtual sound source 虚拟声源的实现
2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2009-10-23 DOI: 10.1109/PACRIM.2009.5291248
M. Alsharif, M. Khosravy, Ryo Koki, T. Yokoda, A. Alaniz, K. Yamashita
{"title":"Implementation of virtual sound source","authors":"M. Alsharif, M. Khosravy, Ryo Koki, T. Yokoda, A. Alaniz, K. Yamashita","doi":"10.1109/PACRIM.2009.5291248","DOIUrl":"https://doi.org/10.1109/PACRIM.2009.5291248","url":null,"abstract":"Development of acoustic systems is a necessitate which require research over audio and speech processing. A novel and interesting concept in the real of acoustic systems is controlling room acoustic path. It means to orient the sound locally in a room to a desired person without annoying others and without using headphone. Room acoustic path enable us to create personal sound space in a specific location of the room. In our former research, we convert two input signals into three output signals. The output signals finally conclude two separated personal sound spaces by using a crosstalk cancellation pre-filter. Our research aimed to reach observed signals at each of two points independent from the other one. Up to the time, only room acoustic attenuation and phase shift was considered between speaker and observer. However, the acoustic impulse response was ignored. So, we considered the acoustic impulse response in this system which does not require the setting state of the speaker. In our new research we realize the above system. The research has two parts, hardware implementation and practical investigation of the realized system.","PeriodicalId":217751,"journal":{"name":"2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131140938","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}
引用次数: 0
MS-initiated handover decision criteria for VoIP over IEEE 802.16e 基于IEEE 802.16e的VoIP的ms发起切换决策标准
2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2009-10-23 DOI: 10.1109/PACRIM.2009.5291321
M. Niswar, S. Kashihara, Yuzo Taenaka, K. Tsukamoto, Y. Kadobayashi, S. Yamaguchi
{"title":"MS-initiated handover decision criteria for VoIP over IEEE 802.16e","authors":"M. Niswar, S. Kashihara, Yuzo Taenaka, K. Tsukamoto, Y. Kadobayashi, S. Yamaguchi","doi":"10.1109/PACRIM.2009.5291321","DOIUrl":"https://doi.org/10.1109/PACRIM.2009.5291321","url":null,"abstract":"The emerging mobile WiMAX (IEEE 802.16e) has gained serious attention as a means of providing wireless broadband access to mobile users. 802.16e supports high data rates and QoS for various applications, and is thus a powerful contender for next generation wireless access technology. On the other hand, IEEE 802.11 a/b/g/n have already been widely used to provide high data rates in a limited area. Therefore, in the near future, 802.16e and 802.11 will co-exist and a multi-homed mobile station (MS) will be likely to execute many handovers (HOs) due to free movement among 802.16e's hotzones and 802.11's hotspots. Many studies of HO decision criteria for 802.11 have been conducted but, so far, HO decision criteria for 802.16e have not yet been sufficiently studied, in particular that for MS-initiated HO in 802.16e. In this paper, we propose MS-initiated HO decision criteria for VoIP over 802.16e considering wireless link condition and congestion state of the 802.16e network, i.e, CINR and MS queue length. Our simulation results show that the combined use of MS queue length and CINR can be a proper MS-initiated HO decision criterion for VoIP over 802.16e.","PeriodicalId":217751,"journal":{"name":"2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129286085","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}
引用次数: 4
Hierarchical Erasure coding for P2P storage P2P存储的分层Erasure编码
2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2009-10-23 DOI: 10.1109/PACRIM.2009.5291245
D. Charles, Sidd Puri
{"title":"Hierarchical Erasure coding for P2P storage","authors":"D. Charles, Sidd Puri","doi":"10.1109/PACRIM.2009.5291245","DOIUrl":"https://doi.org/10.1109/PACRIM.2009.5291245","url":null,"abstract":"The work in this article was motivated by the development of an experimental Peer-to-Peer backup system called Storage Exchange System at Microsoft Live Labs. The data from the peers is encoded using Hierarchical Erasure codes and stored on other peers. Such codes have also been independently described by others. We give a new efficient algorithm that allow us to estimate the availability of the Hierarchically encoded files given an estimate of the availability of the peers. This allows the system to provide a guaranteed lower bound for the availability of the data.","PeriodicalId":217751,"journal":{"name":"2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130827349","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}
引用次数: 0
High Dynamic Range image capturing by Spatial Varying Exposed Color Filter Array with specific demosaicking algorithm 具有特定去马赛克算法的空间变化曝光彩色滤光片阵列高动态范围图像捕获
2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2009-10-23 DOI: 10.1109/PACRIM.2009.5291295
Cheuk-Hong Cheng, O. Au, Ngai-Man Cheung, Chun-Hung Liu, K. Yip
{"title":"High Dynamic Range image capturing by Spatial Varying Exposed Color Filter Array with specific demosaicking algorithm","authors":"Cheuk-Hong Cheng, O. Au, Ngai-Man Cheung, Chun-Hung Liu, K. Yip","doi":"10.1109/PACRIM.2009.5291295","DOIUrl":"https://doi.org/10.1109/PACRIM.2009.5291295","url":null,"abstract":"High Dynamic Range (HDR) imaging is a future trend for digital imaging. With excessive spatial resolution in digital cameras nowadays, plenty of spaces remain in the dynamic domain to enhance the image quality. In order to produce HDR image using conventional devices, multiple captures with different exposure settings are performed and combined. However, multiple exposure systems requires static photo scene. In this paper, a Spatial Varying Exposure (SVE) system is proposed. By altering the exposure settings in spatial domain, it is possible to capture HDR image from instantaneous scene by trading-off spatial resolution. Moreover, a specific demosaicking algorithm is designed to conceal the color pixels assigned to different exposure fields.","PeriodicalId":217751,"journal":{"name":"2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130984484","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}
引用次数: 8
Parallelized computational electromagnetics TLM algorithms on NVIDIA graphics processing units NVIDIA图形处理单元上的并行计算电磁学TLM算法
2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2009-10-23 DOI: 10.1109/PACRIM.2009.5291264
Filippo Rossi, P. So
{"title":"Parallelized computational electromagnetics TLM algorithms on NVIDIA graphics processing units","authors":"Filippo Rossi, P. So","doi":"10.1109/PACRIM.2009.5291264","DOIUrl":"https://doi.org/10.1109/PACRIM.2009.5291264","url":null,"abstract":"Recent advances in computing technology have brought parallel processing power to desktop and laptop computers. As multi-core processor technology becomes mature, a new front in parallel computing technology based on graphics processors has emerged. This paper reports two Transmission Line Matrix algorithms for the latest NVIDIA graphics processors.","PeriodicalId":217751,"journal":{"name":"2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131039192","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}
引用次数: 3
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