Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Engineering
Computer Simulation Of Cross Correlators For Correlated Inputs, Linda J. Coulter
Computer Simulation Of Cross Correlators For Correlated Inputs, Linda J. Coulter
Retrospective Theses and Dissertations
Cross correlator systems, analog and clipped input channels, with correlated random narrow band Gaussian noise as inputs are computer simulated. The performance of each system is evaluated on the basis of the output signal-to-noise ratio. The output SNR of each system is compared with theoretical asymptotic approximations computed as a function of the SNR of the input channels. The output of the simulation compares within 3 dB of the asymptotic approximations for the analog correlator for all values of the correlation coefficient tested and for the systems with clipped input channels with uncorrelated inputs. For the systems with clipped input …
Effects Of Finite Length Registers On A Modified Directform Realization Of A High Order H(Z) Transfer Function, Angel Vanrell
Effects Of Finite Length Registers On A Modified Directform Realization Of A High Order H(Z) Transfer Function, Angel Vanrell
Retrospective Theses and Dissertations
When a digital process is realized on a general-purpose computer or a special-purpose hardware, errors due to finite register length are introduced. These errors are due primarily to arithmetic roundoff, coefficient quantization, and scaling rules. This paper addresses the effects of finite word length on a direct-form implementation of a high order H (z) transfer function. The development and analysis of a modified direct-form realization suggested by Dr. Fred O. Simons, are carried out via FORTRAN emulation of a fourth-order low-pass Butterworth filter. The results are presented as a parametric tradeoff of signal-to-noise ratio at the filter output versus word …
Finite Impulse Response Filter Implementation Via Windowing Technique, Thomas J. Horrigan
Finite Impulse Response Filter Implementation Via Windowing Technique, Thomas J. Horrigan
Retrospective Theses and Dissertations
This research report is devoted to an investigation of finite impulse response (FIR) filters and their implementation via windowing techniques. Analysis is restricted to those FIR filters that possess both a nonrecursive structure and a linear phase response. Initially an informative yet concise overview of FIR filters is presented. Some knowledge of "discrete – time" systems is assumed. Next, the concepts associated with FIR filter implementation through the utilization of window functions is developed. Analysis is performed in both the time and frequency domains. Results obtained define optimal window function criteria. The last design technique is devoted to computer aided …
Digital Hearing Aids, Somsak Deawsurintr
Digital Hearing Aids, Somsak Deawsurintr
Retrospective Theses and Dissertations
This paper describes the design of a hearing aid using digital techniques. The Amplitude Compression Amplifier and Digital Filter are discussed. General review of different filter types are presented as background for the design of Digital Filters. The design procedure for Digital Filters and the software program for the Intel-2920 signal processor are created. Finally, the program is tested by simulation via the 2920-Simulator.