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Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers最新文献

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An image analysis example using learning agents 使用学习代理的图像分析示例
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.599120
G. Donohoe, C. Wofsy, J. Oliver
{"title":"An image analysis example using learning agents","authors":"G. Donohoe, C. Wofsy, J. Oliver","doi":"10.1109/ACSSC.1996.599120","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.599120","url":null,"abstract":"When fully automatic image analysis is not feasible, an interactive, semiautonomous system may suffice. We present an application in electron microscopy in which the user gives the computer varying degrees of autonomy to detect gold-stained proteins in images of the surface of a cell. Initially, the system operates in a manual mode: the user clicks the mouse on the image to designate the coordinates of a protein molecule. In the most autonomous mode, a single mouse click inside a cluster of particles spawns an agent which \"nests\" in a molecule and \"breeds\": producing copies of itself each of which searches for a molecule. The user always has the option to override the autonomous labeling, so classification accuracy is assured.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134055196","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
Multiresolution representation of non-uniformly sampled terrain databases using wavelets 非均匀采样地形数据库的小波多分辨率表示
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.599092
C. Madhuram, Sung Soo Kim, R. Guha, G. Schiavone, R. Mohapatra
{"title":"Multiresolution representation of non-uniformly sampled terrain databases using wavelets","authors":"C. Madhuram, Sung Soo Kim, R. Guha, G. Schiavone, R. Mohapatra","doi":"10.1109/ACSSC.1996.599092","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.599092","url":null,"abstract":"Terrain databases contain data of a terrain which may be uniformly or non-uniformly sampled. In the case of non-uniformly sampled terrains, the resulting structure is a TIN (triangulated irregular network). Since a typical terrain database may contain a large number of triangles, it is often difficult to visualize and organize them. We propose the usage of wavelets in terrain databases to construct hierarchical representations of the terrain skin. It is observed that the resulting structure enables easy construction of multiple LODs (level of details) automatically and also has various other uses like polyhedral compression.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127587994","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
Performance of 2-dimensional RAKE receiver for high data rates in direct sequence mobile communications 二维RAKE接收机在直接序列移动通信中的高数据速率性能
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.601125
S. Buljore, H. Iwai, J. Zeidler, L. Milstein
{"title":"Performance of 2-dimensional RAKE receiver for high data rates in direct sequence mobile communications","authors":"S. Buljore, H. Iwai, J. Zeidler, L. Milstein","doi":"10.1109/ACSSC.1996.601125","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.601125","url":null,"abstract":"The paper investigates and characterizes the performance of a hybrid space-path diversity direct sequence receiver in multipath frequency selective radio channels. For high data rates, the delay spread of the multipath channel introduces intersymbol interference (ISI). Thus, both intersymbol interference and channel selectivity degrade the performance of the simple correlating receiver. The performance using a space-path diversity maximal ratio combining receiver, for different data rates and a typical urban channel model (maximum delay of 5 /spl mu/s), is presented.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133022183","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
Adaptive detector statistics using moment-based approximations 自适应检测器统计使用基于矩的近似
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.599117
S.T. Smith
{"title":"Adaptive detector statistics using moment-based approximations","authors":"S.T. Smith","doi":"10.1109/ACSSC.1996.599117","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.599117","url":null,"abstract":"Adaptive filtering techniques are used for many detection applications such as communications and radar, yet the complicated statistics of adaptive detectors frustrate a closed form analysis of their performance. This paper offers a partial solution to this problem by providing closed form moments of the adaptive matched filter (AMF) and generalized likelihood ratio test (GLRT) that can be used in a Laguerre series expansion to efficiently complete the probabilities of detection and false alarm of these adaptive detectors. The radar case is considered in particular. Furthermore, exact closed form statistics of the AMF are given which are convenient for probability of false alarm computations and describing the asymptotic behavior of this test.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127056704","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
Optimization of spanning tree carry lookahead adders 生成树进位前瞻加法器的优化
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.600852
J. Blackburn, L. Arndt, E. Swartzlander
{"title":"Optimization of spanning tree carry lookahead adders","authors":"J. Blackburn, L. Arndt, E. Swartzlander","doi":"10.1109/ACSSC.1996.600852","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.600852","url":null,"abstract":"This paper examines the optimization of the 64-bit spanning tree carry lookahead adder by sizing the transistors in the different Manchester carry chain blocks and by adjusting the block widths within the carry tree to reduce the critical delay paths of the carry signals. Previous spanning tree designs are re-simulated using HSPICE, with parameters for a 0.35 /spl mu/m CMOS process, to compare against the circuits designed for this paper. After analyzing many different configurations using the 16-bit carry select boundary, two circuits employing an 8-bit carry select boundary are designed and simulated.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115532067","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
Design and application of versatile noise feedback requantizer with large fractional bandwidth, arbitrary center frequency, and real or complex inputs and outputs 大分数带宽、任意中心频率、实或复杂输入输出的多功能噪声反馈要求器的设计与应用
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.599184
F. Harris, C. Dick
{"title":"Design and application of versatile noise feedback requantizer with large fractional bandwidth, arbitrary center frequency, and real or complex inputs and outputs","authors":"F. Harris, C. Dick","doi":"10.1109/ACSSC.1996.599184","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.599184","url":null,"abstract":"We describe a technique to design noise feedback requantizer systems with large fractional bandwidth, of arbitrary center frequency, with real or complex inputs and outputs. Such a system performs as a preprocessor in a signal processing chain. Its function is to represent a digital signal, spanning a small fractional bandwidth, with a reduced number of bits. The advantage of this preprocessor is that subsequent digital signal processing can be performed with significantly fewer arithmetic resources due to the reduced number of input data bits.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114547466","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
Design and performance of fading insensitive orthogonal frequency division multiplexing (OFDM) using polyphase filtering techniques 基于多相滤波技术的衰落不敏感正交频分复用(OFDM)的设计与性能
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.601133
R. W. Lowdermilk, F. Harris
{"title":"Design and performance of fading insensitive orthogonal frequency division multiplexing (OFDM) using polyphase filtering techniques","authors":"R. W. Lowdermilk, F. Harris","doi":"10.1109/ACSSC.1996.601133","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.601133","url":null,"abstract":"We describe a modification of orthogonal frequency division multiplexing (OFDM) which ameliorates system performance degradation due to fast fading multipath channels. This technique continues to employ the fast Fourier transform (FFT) for efficient modulation and demodulation of the contiguous subcarriers. It differs from conventional OFDM by the use of time domain shaping and duration extension to reduce the spectral sidelobes of the orthogonal signal set. The extended waveshape duration causes significant but known intersymbol interference (ISI) which is removed after the matched filtering process by a post-processing equalizer. The combined process of spectral shaping at the modulator and matched filtering and equalization at the receiver exhibits significant but known adjacent channel interference (ACI) which is removed by cross coupled canceling filters.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114664533","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: 20
An adaptive technique for automated recognition of musical tones 一种自动识别音乐音调的自适应技术
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.599121
S.C. Davies, D. Etter
{"title":"An adaptive technique for automated recognition of musical tones","authors":"S.C. Davies, D. Etter","doi":"10.1109/ACSSC.1996.599121","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.599121","url":null,"abstract":"This paper discusses the design of a software system that accepts as input a digitized waveform representing an acoustical music signal, and that attempts to derive the notes from the signal so that a musical score can be produced. The signal processing algorithms involved include event detection, or the discovery of precisely where within the signal the various notes actually begin and end, and pitch extraction, or the identification of the pitches being played in each interval. The paper presents the details of the algorithm, and compares the computer-generated score with the actual score for a song played with three instruments.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126188562","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
Nonuniform filterbank design for audio signal modeling 音频信号建模的非均匀滤波器组设计
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.599141
Michael Goodwin
{"title":"Nonuniform filterbank design for audio signal modeling","authors":"Michael Goodwin","doi":"10.1109/ACSSC.1996.599141","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.599141","url":null,"abstract":"In audio analysis-synthesis based on the sinusoidal model, the signal can be represented as the sum of a deterministic component, which consists of a sum of sinusoids, and a stochastic component, which is a broadband noiselike process, for instance breath noise in a flute. In coding applications, a signal estimate based solely on the deterministic component is often used. For high-fidelity synthesis, however the stochastic component must also be modeled and incorporated into the signal reconstruction. This paper presents a simple approach for designing a nonuniform filterbank based on the properties of the human auditory system; the short-term energies of the subband signals of the nonuniform filterbank provide an effective parameterization of the stochastic component of the signal model.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124631731","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: 7
Subband adaptive filtering applied to acoustic feedback reduction in hearing aids 子带自适应滤波在助听器声反馈抑制中的应用
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.601163
M. Siqueira, R. Speece, E. Petsalis, A. Alwan, S. Soli, S. Gao
{"title":"Subband adaptive filtering applied to acoustic feedback reduction in hearing aids","authors":"M. Siqueira, R. Speece, E. Petsalis, A. Alwan, S. Soli, S. Gao","doi":"10.1109/ACSSC.1996.601163","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.601163","url":null,"abstract":"Acoustic feedback is a problem in hearing aids that contain a substantial amount of gain, such as hearing aids that are used in conjunction with vented or open molds and in-the-ear hearing adds. Acoustic feedback is both annoying and reduces the maximum usable gain of hearing-aid devices. This paper models the time-varying acoustic feedback path for hearing aids before performing a systematic evaluation of acoustic feedback reduction techniques through perceptual experiments. It is shown that by using a subband NLMS adaptive filtering approach, the same performance of wideband NLMS algorithms is obtained with a fraction of the complexity.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129884884","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: 14
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