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Effects of quantization noise in digital filters 数字滤波器中量化噪声的影响
AFIPS '66 (Spring) Pub Date : 1966-04-26 DOI: 10.1145/1464182.1464207
B. Gold, C. Rader
{"title":"Effects of quantization noise in digital filters","authors":"B. Gold, C. Rader","doi":"10.1145/1464182.1464207","DOIUrl":"https://doi.org/10.1145/1464182.1464207","url":null,"abstract":"If a discrete time linear system, hereafter called a digital filter, is programmed on a digital computer or realized with digital elements, computational errors due to finite word length are unavoidable. These errors may be subdivided into three classes, namely, the error caused by discretization of the system parameters, the error caused by analog to digital conversion of the input analog signal, and the error caused by roundoff of the results which are needed in further computations. The first type of error results in a fixed deviation in system parameters and is akin to a slightly wrong value of (say) an inductance in an analog filter. We shall not treat this problem here; it has been treated in some detail by Kaiser. The other two sources of error are more complicated but if reasonable simplifying assumptions are made they can be treated by the techniques of linear system noise theory. It is our aim to set up a model of a digital filter which includes these two latter sources of error and, through analysis of the model, to relate the desired system performance to the required length of computer registers.","PeriodicalId":158826,"journal":{"name":"AFIPS '66 (Spring)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1966-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114200183","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: 46
A pattern recognition technique and its application to high-resolution imagery 一种模式识别技术及其在高分辨率图像中的应用
AFIPS '66 (Spring) Pub Date : 1966-04-26 DOI: 10.1145/1464182.1464235
R. D. Joseph, S. Viglione
{"title":"A pattern recognition technique and its application to high-resolution imagery","authors":"R. D. Joseph, S. Viglione","doi":"10.1145/1464182.1464235","DOIUrl":"https://doi.org/10.1145/1464182.1464235","url":null,"abstract":"The purpose of this project was to extend the study of the feasibility of automatic TIROS photograph analysis. A specific objective was to arrive at the design specification for a feasibility model of an automatic vortex recognition system.","PeriodicalId":158826,"journal":{"name":"AFIPS '66 (Spring)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1966-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128687085","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: 6
Hybrid simulation of a free piston engine 自由活塞发动机的混合动力仿真
AFIPS '66 (Spring) Pub Date : 1966-04-26 DOI: 10.1145/1464182.1464227
R. Gagne, E. J. Wright
{"title":"Hybrid simulation of a free piston engine","authors":"R. Gagne, E. J. Wright","doi":"10.1145/1464182.1464227","DOIUrl":"https://doi.org/10.1145/1464182.1464227","url":null,"abstract":"The free piston engine principle is one which has intrigued mechanical engineers for decades. Indeed, the original gas engine of Otto and Langden employed a piston assembly which did not contain the now conventional connecting rod and camshaft arrangement and hence may be considered as an early implementation of the free piston principle. Today, however, the free piston principle is normally applied to a highly supercharged two-stroke compression ignition engine in which two opposed reciprocating pistons are used in a diesel cylinder. These pistons do not transmit mechanical energy but instead pneumatic energy is delivered in the form of high-pressure, high-temperature exhaust gas to a separate power turbine to obtain shaft power.","PeriodicalId":158826,"journal":{"name":"AFIPS '66 (Spring)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1966-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126103580","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
Application of computer-based retrieval concepts to a marketing information dissemination system 计算机检索概念在营销信息发布系统中的应用
AFIPS '66 (Spring) Pub Date : 1966-04-26 DOI: 10.1145/1464182.1464217
James J. Gatto
{"title":"Application of computer-based retrieval concepts to a marketing information dissemination system","authors":"James J. Gatto","doi":"10.1145/1464182.1464217","DOIUrl":"https://doi.org/10.1145/1464182.1464217","url":null,"abstract":"It is a practical philosophy of many industrial advertisers to direct promotional material and product information to customers and prospects on a selective basis. This selectivity entails direction of mail to recipients so that each receives literature in accord with his established needs and interests. Selectivity affords a considerable reduction in material, addressing and postage costs, and insures that the right information is sent to the right person at the right time. In addition to enhancing the personal touch in the process, the likelihood is increased that the recipient will study and retain every mailing sent to him because he recognizes that these are about subjects in which he is likely to have an active interest.","PeriodicalId":158826,"journal":{"name":"AFIPS '66 (Spring)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1966-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125432001","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
Time-sharing in the IBM system/360: model 67 IBM系统/360中的分时系统:型号67
AFIPS '66 (Spring) Pub Date : 1966-04-26 DOI: 10.1145/1464182.1464190
Charles T. Gibson
{"title":"Time-sharing in the IBM system/360: model 67","authors":"Charles T. Gibson","doi":"10.1145/1464182.1464190","DOIUrl":"https://doi.org/10.1145/1464182.1464190","url":null,"abstract":"The basic architecture of the IBM System/360 makes it well suited to processing in a multiprogramming and multiprocessing environment. The Model 67 extends this basic architecture to provide the additional capabilities of an advanced time-sharing system.","PeriodicalId":158826,"journal":{"name":"AFIPS '66 (Spring)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1966-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126459045","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: 32
ADAM: a generalized data management system ADAM:一个通用的数据管理系统
AFIPS '66 (Spring) Pub Date : 1966-04-26 DOI: 10.1145/1464182.1464204
Thomas L. Connors
{"title":"ADAM: a generalized data management system","authors":"Thomas L. Connors","doi":"10.1145/1464182.1464204","DOIUrl":"https://doi.org/10.1145/1464182.1464204","url":null,"abstract":"ADAM is a computer program system built by The MITRE Corporation for use in the MITRE/ESD Systems Design Laboratory as a tool to aid the design and evaluation of data management systems. ADAM operates on the IBM 7030 (STRETCH) computer and has been operational since early 1965.","PeriodicalId":158826,"journal":{"name":"AFIPS '66 (Spring)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1966-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127167005","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
DSL/90: a digital simulation program for continuous system modeling DSL/90:用于连续系统建模的数字仿真程序
AFIPS '66 (Spring) Pub Date : 1966-04-26 DOI: 10.1145/1464182.1464201
W. M. Syn, R. Linebarger
{"title":"DSL/90: a digital simulation program for continuous system modeling","authors":"W. M. Syn, R. Linebarger","doi":"10.1145/1464182.1464201","DOIUrl":"https://doi.org/10.1145/1464182.1464201","url":null,"abstract":"Computer simulation has been used for some time in the analysis and design of dynamic systems. With recent advancements in computer performance, the field of dynamic simulation---long the exclusive domain of the analog computer---has begun to utilize digital methods. No less than a score of digital simulation programs have appeared since R. G. Selfridge's pioneering effort in 1955; and the number is ever-increasing. These programs offer a convenient method of simulating continuous system dynamics employing well-known and easy-to-use analog computer programming techniques. The common starting point for such simulation is the conventional analog block diagram, and the common approach is the breakdown of the mathematical system model into its component parts or functional blocks. These blocks, having a near one-to-one correspondence with analog computing elements such as integrators, summers, limiters, etc., usually appear as subroutines within the simulator program. Using one of the simulation packages, \"programming\" involves no more than merely interconnecting the functional blocks by a sequence of connection statements according to the rules laid down by the input language. This interconnecting of blocks is analogous to the wiring of the patchboard on an analog computer. Therefore, these digital-analog simulation programs combine the best features of the analog and digital computers: the flexibility of block connection structure of the former and the accuracy and reliability of the latter.","PeriodicalId":158826,"journal":{"name":"AFIPS '66 (Spring)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1966-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114683796","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: 21
High-speed convolution and correlation 高速卷积和相关
AFIPS '66 (Spring) Pub Date : 1966-04-26 DOI: 10.1145/1464182.1464209
T. Stockham
{"title":"High-speed convolution and correlation","authors":"T. Stockham","doi":"10.1145/1464182.1464209","DOIUrl":"https://doi.org/10.1145/1464182.1464209","url":null,"abstract":"Cooley and Tukey have disclosed a procedure for synthesizing and analyzing Fourier series for discrete periodic complex functions. For functions of period <i>N</i>, where <i>N</i> is a power of 2, computation times are proportional to <i>N</i> log<sub>2</sub> <i>N</i> as expressed in Eq. (0).","PeriodicalId":158826,"journal":{"name":"AFIPS '66 (Spring)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1966-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127830004","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: 363
A business-oriented time-sharing system 面向企业的分时系统
AFIPS '66 (Spring) Pub Date : 1966-04-26 DOI: 10.1145/1464182.1464215
G. Duffy, W. D. Timberlake
{"title":"A business-oriented time-sharing system","authors":"G. Duffy, W. D. Timberlake","doi":"10.1145/1464182.1464215","DOIUrl":"https://doi.org/10.1145/1464182.1464215","url":null,"abstract":"The purpose of this project was twofold. First, to gain systems and operating experience with a remote terminal, time-sharing system. This would help to define the needs of future time-sharing applications. Second, to achieve productive use of time-sharing in some of IBM's current operations.","PeriodicalId":158826,"journal":{"name":"AFIPS '66 (Spring)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1966-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134338416","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
"Never-fail" audio response system “永不失败”的音频响应系统
AFIPS '66 (Spring) Pub Date : 1966-04-26 DOI: 10.1145/1464182.1464216
Bruce Dale
{"title":"\"Never-fail\" audio response system","authors":"Bruce Dale","doi":"10.1145/1464182.1464216","DOIUrl":"https://doi.org/10.1145/1464182.1464216","url":null,"abstract":"The Northwestern Bell Traffic Rating System is a real-time audio response dual computer system which must be on-line continuously. The system allows any Northwestern Bell long-distance operator to interrogate a remotely located computer system for a long-distance toll rate. The 3000 operators are widely scattered over an area covering 10% of the country. The toll message response consists of an amount, plus a word denoting whether the rate is for a \"station-to-station\" or \"person-to-person\" call. These conditions are ideal for using audio response for the remote display of information, rather than any of the commonly used hardware terminals.","PeriodicalId":158826,"journal":{"name":"AFIPS '66 (Spring)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1966-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124068794","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
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