Title :
Audio frequency spectrum analysis using MOS memory elements
Author :
Bially, Theodore
Author_Institution :
Massachusetts Institute of Technology, Lexington, Mass.
fDate :
6/1/1970 12:00:00 AM
Abstract :
The speed of present-day logic elements is such that it is possible to effect real-time spectrum analysis of audio frequency signals by means of digital hardware. This paper describes a structure that computes the discrete Fourier transform of a 400-point time sequence in 10 ms. This allows the real-time analysis of signals having components in the range from dc to 5 kHz. A high-speed bipolar arithmetic section is used in conjunction with relatively slower MOS shift registers and READ-ONLY memory to provide an efficient and economical design.
Keywords :
Adders; Arithmetic; Clocks; Discrete Fourier transforms; Frequency; Laboratories; Military computing; Packaging; Shift registers; Signal analysis;
Journal_Title :
Audio and Electroacoustics, IEEE Transactions on
DOI :
10.1109/TAU.1970.1162089
