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检索条件"主题词=Pulse-code modulation"
68 条 记 录,以下是41-50 订阅
排序:
ERROR ANALYSIS OF A RAMP-TYPE PCM SOURCE ENcodeR FOR COLOR-TELEVISION SIGNALS
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PROCEEDINGS OF THE INSTITUTION OF ELECTRICAL ENGINEERS-LONDON 1976年 第7期123卷 662-666页
作者: WADE, JG PLYMOUTH POLYTECH SCH ELECT ENGNPLYMOUTH PL4 BAAENGLAND
The principle of an inherently simple 8-bit p.c.m. source encoder for video signals is briefly discussed, and a mathematical model of the encoder is developed. Parameters in the model are each assigned a normal probab... 详细信息
来源: 评论
6-BIT DPCM VIDEO SIGNAL-PROCESSING AND IMPLEMENTATION USING SYSTOLIC ARRAYS
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ELECTRONICS LETTERS 1990年 第16期26卷 1225-1227页
作者: IBRAHIM, MK AGGOUN, A Department of Electrical and Electronic Engineering University of Nottingham Nottingham UK
A novel approach to increase the speed and reduce the hardware requirement of 2-D systolic convolvers for real-time video signal/image processing is proposed. This is achieved by coding video signals/images more effic... 详细信息
来源: 评论
STABILITY OF P.C.M.-OSCILLATOR SYNCHRONISATION SYSTEMS WITH SAMPLED ERROR SIGNALS
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ELECTRONICS LETTERS 1969年 第9期5卷 183-&页
作者: MILLER, MR Institute of Engineering Control University of Warwick Coventry UK
Previous analyses of control-system stability have approximated the p.c.m. synchronisation system to a continuous linear model. The digital nature of the equipment indicates that a sampled model is more appropriate, a... 详细信息
来源: 评论
Delta-sigma waveguides for music synthesis
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COMPUTER MUSIC JOURNAL 1999年 第4期23卷 33-47页
作者: Wallin, E Williams, RD Salinas, MH Lucent Technol Whippany NJ 07981 USA Univ Virginia Dept Elect Engn Charlottesville VA 22903 USA
Physical modeling of musical instruments has proven to be an interesting and useful technique for sound synthesis, because it provides the variability of real instruments. Natural dynamics can be captured in the model... 详细信息
来源: 评论
ZERO-CROSSING PRESERVATION IN LOW-BIT-RATE PSEUDORANDOMLY DITHERED QUANTIZATION OF SPEECH SIGNALS
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PROCEEDINGS OF THE INSTITUTION OF ELECTRICAL ENGINEERS-LONDON 1975年 第2期122卷 119-123页
作者: CHEN, M TURNER, LF IMPERIAL COLL SCI & TECHNOL DEPT ELECT ENGNEXHIBITION RDLONDON SW7 2BTENGLAND
In earlier investigations, it has been found that, at low bit rates, the dithered quantisation of speech samples in pulse-code modulation (p.c.m.) is perceptually pleasing but is less intelligible than normal fixed-le... 详细信息
来源: 评论
LINEAR pulse DISTORTION EFFECTS IN APPLICATIONS OF SEMICONDUCTOR OPTICAL AMPLIFIERS TO LOCAL-NETWORK
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ELECTRONICS LETTERS 1989年 第9期25卷 618-619页
作者: ZENTENO, LA Polaroid Corp. Cambridge MA USA
It is shown that residual facet reflectivity in travelling-wave semiconductor optical amplifiers causes cumulative pulse broadening and distortion, hence limiting the maximum number of amplifiers that may be reliably ... 详细信息
来源: 评论
PROGRAMMABLE SPLICE-FREE QUASI-MONOLITHIC 2 GBIT/S OPTICAL FIBER pulse code GENERATOR
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ELECTRONICS LETTERS 1990年 第20期26卷 1673-1675页
作者: KIRKBY, CJG REID, DCJ JOU, DC PCO INC CHATSWORTHCA 91311
A mechanically programmable optical fibre lattice pulse code generator, implemented in a quasi-monolithic, splice-free polished coupler technology, has been designed, constructed and characterised. The prototype syste... 详细信息
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pulse swallow frequency divider with idle DFFs automatically powered off
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ELECTRONICS LETTERS 2012年 第11期48卷 636-638页
作者: Gao, Haijun Sun, Lingling Liu, Jun Hangzhou Dianzi Univ Minist Educ Key Lab RF Circuits & Syst Hangzhou 310038 Zhejiang Peoples R China
A pulse swallow frequency divider with ultra-low power consumption is presented. The D flip-flops (DFFs) in the prescaler and the swallow counter are controlled by the modulus control signal and are automatically powe... 详细信息
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DETERMINATION OF OPTIMUM RECONSTRUCTION LEVELS FOR EMBEDDED DEcodeRS
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ELECTRONICS LETTERS 1994年 第21期30卷 1737-1738页
作者: LOCKHART, GB ZHANG, SD Dept. of Electron. & Electr. Eng. Leeds Univ.
An iterative technique is described for computing optimum decoder reconstruction levels from input statistics given from 1 to R received bits per sample of the output of an R-bit per sample linear PCM encoder. Simulat... 详细信息
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PRACTICAL REAL-TIME PWM MODULATORS - AN ASSESSMENT
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IEE PROCEEDINGS-B ELECTRIC POWER APPLICATIONS 1992年 第2期139卷 96-102页
作者: HANDLEY, PG BOYS, JT UNIV AUCKLAND DEPT ELECT & ELECTR ENGNAUCKLANDNEW ZEALAND
Many techniques have been proposed for generating PWM waveforms for controlling AC motor drives. This paper demonstrates the practicality of generating real-time, software-based PWM waveforms using low-cost microproce... 详细信息
来源: 评论