A low-cost microcomputer-based frequency analyzer with 35 kHz bandwidth

Authors

Caesar A. Saloma ⋅ PH National Institute of Physics, University of the Philippines Diliman
Joy V. Dayo ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

An Apple ][-based frequency analyzer with a digitizing rate of 35 kilosamples per second at 8-bit vertical resolution is presented. The FFT software uses the Cooley-Tukey algorithm and features a 128-8192 point FFT variable transform size to provide resolution from 5 hertz to 300 hertz. By the sampling theorem, the 35 kilohertz sampling frequency will be capable of uniquely describing the Fourier spectrum of analog signals having harmonics as high as 17.5 kilohertz (audible spectrum).

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Issue

1987: Proceedings of the Sixth Samahang Pisika ng Pilipinas National Physics Congress

Article ID

SPP-1987-PS-10

Section

Plenary Sessions

Published

1987-05-22

How to Cite

[1]

CA Saloma and JV Dayo, A low-cost microcomputer-based frequency analyzer with 35 kHz bandwidth, Proceedings of the Samahang Pisika ng Pilipinas 6, SPP-1987-PS-10 (1987). URL: https://proceedings.spp-online.org/article/view/SPP-1987-PS-10.