Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Engineering
Internal Precision And The Common Sample Rate, James C. Kirkwood
Internal Precision And The Common Sample Rate, James C. Kirkwood
Retrospective Theses and Dissertations
The relationship between internal precision and input/output precision and the ratio of sample frequency to signal frequency has been described in qualitative terms for the general case and in quantitative terms for many special cases. This paper attempts to generate quantitative approximated guidelines for the general case. Lowpass and bandpass digital filters are implemented using cascaded second order sections via a program that varies the amount of internal precision available for the emulation, and calculates the error produced compared to a 64 bit standard. The errors are plotted, and general equations relating input/output precision and internal precision and the ratio …
Suitability Of The Tms320 Digital Signal Processor In Digital Signal Processing Applications Requiring Multiple-Precision, Randall L. Walker
Suitability Of The Tms320 Digital Signal Processor In Digital Signal Processing Applications Requiring Multiple-Precision, Randall L. Walker
Retrospective Theses and Dissertations
The TMS320 single-chip digital signal processor, produced by Texas Instruments, shows promise for a long life-cycle not only because it fills a technical need in the digital signal processing field; but because it also represents an excellent early design. Furthermore, Texas Instruments has provided thorough software and development support. However, this chip was not designed to support digital signal processing applications which require multiple-precision operations. In this paper, algorithms were developed and expressed in macros that provide the capability of modeling systems requiring multiple-precision operations. Finally, a performance envelope showing the system complexity versus sampling bandwidth limitations is provided to …
Digital Signal Processing Capabilities Of The Fujitsu Mb8764, Harold B. Creech
Digital Signal Processing Capabilities Of The Fujitsu Mb8764, Harold B. Creech
Retrospective Theses and Dissertations
The Fujitsu MB8764 digital signal processing chip is designed to operate with a machine cycle of up to 10 MHz. The chip’s ability to perform a 16-by-16 bit multiply and add operation in one machine cycle makes it a good candidate for real time digital signal processing. Unlike the Intel 2920 the Fujitsu MB8764 does not have an onboard analog-to-digital, digital-to-analog converter. Therefore, this paper will be restricted to the operation of this device with digital data input and output. The use of the MB8764 as a digital filter is analyzed. Performance limitations due to finite word length, memory size …