The U. S. Naval Research Laboratories algorithm of Elovitz et. al. enables automatic transalation of English text to IPA and, via a further mapping, to input for a "phoneme" based synthesizer such as VOTRAX....
详细信息
The U. S. Naval Research Laboratories algorithm of Elovitz et. al. enables automatic transalation of English text to IPA and, via a further mapping, to input for a "phoneme" based synthesizer such as VOTRAX. A novel feature of the NRL algorithm is that the set of 300+ rules used to perform the translation is read in at run time and thus may be easily altered to expand the set of rules in general or to treat special cases such as jargon. While the orignal NRL FASBOL version ran about 4 to 5 times real time on a PDP-10, Broihier and Crowley implelemented a BASIC Plus version which translated up to 165 words per minute on a PDP-11/70. The program included here consists essentially of a FORTRAN control structure with calls to string manipulation subroutines, available as efficient library routines under the PDP-11 RT-11 operating system. The software runs in less than real time on an LSI-11 with 16K of memory. Alternatively, using the string manipulation routine definitions provided, an all-FORTRAN version may be written. Finally, the straightforward, non-recursive structure employed can implemented in other high level languages. In fact, a PL/M version has been written which, using calls to assembler routines employing block move instructions, will run real time on a Zilog Z-80.
In a previous paper, it was shown that the presence of a combinatorial shifter in the data paths of a user microprogrammable general purpose computer could be used for fast fixed-point multiplication if a unique micro...
详细信息
In a previous paper, it was shown that the presence of a combinatorial shifter in the data paths of a user microprogrammable general purpose computer could be used for fast fixed-point multiplication if a unique microsubroutine was created for each required multiplier. A sixth-order direct form IIR digital filter was implemented via this technique. This work has been extended, so as to produce a tenth-order LPC k-parameter lattice synthesizer software system which executes in about 60% real time. The remaining CPU time may be allocated for k-parameter manipulation, as in synthesis-by-rule aAgorithms, or for unrelated computation. The approach used is novel since it involves dynamic analysis of k-parameters and creation of the microsubroutines required for synthesis during each pitch period. The results suggest that a high speed shifter embedded in an otherwise conventional micromachine architecture is Useful for practical, real-time digital signal processing applications.
This paper provides a description of the programming language Pascal. It has been published to enable those without easy access to the official BSI ‘draft for comment’ to comment on the description.
This paper provides a description of the programming language Pascal. It has been published to enable those without easy access to the official BSI ‘draft for comment’ to comment on the description.
The fast Fourier transform can be used to invert z transforms (including probability generating functions), but this application has received little attention or use. This correspondence makes a case for the FFT as a ...
作者：
JOLLIFF, JVCALLAHAN, CMUSNCapt. James V. Jolliff
USNgraduated from the U. S. Naval Academy in 1954. Following graduation he served in the USS S. N. Moore (DD—747) and USS Cimarron (AO—22). He received his MS degrees in Naval Architecture from Webb Institute of Naval Architecture and in Financial Management from The George Washington University. He culminated his education at The Catholic University of America where he was awarded his Doctorate in Ocean Engineering in 1972. Capt. Jolliff has served in Naval Shipyards as Ship Superintendent Assistant Repair Officer and Assistant Planning & Estimating Superintendent and as such was primarily concerned with the repair and conversion of U. S. Navy skips. In addition he has served as Maintenance Officer Staff of Commander Mine Force U. S. Pacific Fleet as Co—Chairman of the Naval Engineering Division
Engineering Department U. S. Naval Academy and as CV Design Manager in the Advanced Concepts Division and as Head
Ship Survivability Office Naval Ship Engineering Center. An active member of ASNE since 1966 he has served as a member of the National Council and is currently the Chairman of the Journal Committee. He has had several papers presented at ASNE Day and published in the Journal and in 1976 was one of the recipients of the ASNE President's Award. At the present time he is assigned as the Commanding Officer Naval Coastal Systems Laboratory (NCSL) Panama City Fla. Mr. Casville M. Callahanis a native of Southwest Virginia where he attended Elementary and Secondary School prior to his three year's service in the U. S. Navy during World War II. He graduated from Lincoln Memorial University
Harrogate Tenn. in 1950 receiving his BS degree in Mathematics. In 1952 he received his MS degree in Mathematics from Auburn University Auburn Ala. and taught mathematics at Lincoln Memorial University and at Florida State University Tallahassee Fla. prior to joining the staff of the Mine Defense Laboratory in 1955. He has progressed through a variety of assignments as the Labo
Test and Evaluation have become paramount in today's department of Defense acquisition process. Therefore, the U. S. Navy requires both private and public facilities to accomplish the final goals of the “Fly befo...
Test and Evaluation have become paramount in today's department of Defense acquisition process. Therefore, the U. S. Navy requires both private and public facilities to accomplish the final goals of the “Fly before Buy” concept. Such a facility exists at the Naval Coastal systems Laboratory (NCSL); an integral part of the Chief of Naval Material's, Director of Navy Laboratories organization. This paper briefly addresses the Laboratory, its mission, and its history. This is followed by an in—depth facilities overview in order to create an understanding of the slow but steady evolution of NCSL's unique fixed facilities. These facilities, when coupled to the local natural environment, provide a unique in situ test and evaluation capability which is unequalled in the United States for assessing seagoing coastal systems. Of prime consideration is the Range Date Acquisition Center (RADAC) and Its ancillary subsystems for tracking, environmental monitoring, communications, and post run analysis. The paper is concluded with a discussion of both past and present use of the aforementioned facilities with an emphasis on user acceptance and future potential growth.
A number of technological forecasting techniques are discussed in this paper. The application of these techniques to assist in the planning of future developments is examined. Particular emphasis is placed on the use ...
A number of technological forecasting techniques are discussed in this paper. The application of these techniques to assist in the planning of future developments is examined. Particular emphasis is placed on the use of technological forecasting in writing future development scenarios, determining the feasibility of the desired future objectives and in selecting the optimum planning procedures and the required projects to achieve these objectives.
It has previously been shown that automatically generated digital signal processings software can incorporate precomputed, data independent, program control and data access parameters. Such software is "time-effi...
详细信息
It has previously been shown that automatically generated digital signal processings software can incorporate precomputed, data independent, program control and data access parameters. Such software is "time-efficient"; that is, at run time, only data dependent computation occurs. In this paper, alternative program structures, all of which accommondate the autogen feature, are examined for time/ space (memory) efficiency considerations on both conventional machines and those having cache memories. A novel structure derived from threaded code -- knotted code -- is proposed and shown to incorporate an excellent time/space tradeoff.
An optimal production policy in a job shop queue specifies, for minimum cost, the number of servers, amount of overtime, and the maximum queue length allowed before subcontracting takes place. This paper examines the ...
详细信息
An optimal production policy in a job shop queue specifies, for minimum cost, the number of servers, amount of overtime, and the maximum queue length allowed before subcontracting takes place. This paper examines the development and application of such a policy.
This note gives the necessary conditions for local identifiability of innovations models of linear dynamic systems. It is shown that the information matrix is singular if the input power density spectrum contains less...
暂无评论