DocumentCode :
2592155
Title :
Sound demonstration software for teaching DSP
Author :
Zhu, J. Jim ; Johnson, Wyatt
Author_Institution :
Dept. of Electr. & Comput. Eng., Louisiana State Univ., Baton Rouge, LA, USA
fYear :
1995
fDate :
12-14 Mar 1995
Firstpage :
450
Lastpage :
454
Abstract :
The purpose of the paper is to demonstrate how teaching a few key concepts in digital signal processing (DSP) can be made easier and more effective by exploiting the sound capabilities of today´s multimedia computer systems, such as the PC. By using DSP concepts, the audible difference in sound quality of a music clip when downsampled with and without an anti aliasing filter can be explained to the students. By the same token, it is easy to explain the difference in quality of an upsampled sound signal when used with and without an interpolation filter. MATLAB (Version 4.2c) is used because of its ease of use, and cross platform portability. Sound data files are read in, processed, and then saved. It is then possible to hear the difference between signals either using MATLAB itself or using an appropriate sound tool
Keywords :
antialiasing; audio signals; audio systems; computer aided instruction; computer science education; digital filters; multimedia computing; signal processing; teaching; DSP; MATLAB; PC; anti aliasing filter; cross platform portability; digital signal processing; interpolation filter; multimedia computer systems; music clip; sound data files; sound demonstration software; sound quality; sound tool; teaching; upsampled sound signal; Band pass filters; Bandwidth; Digital signal processing; Education; Filtering; Finite impulse response filter; Fourier transforms; Frequency; Sampling methods; Terminology;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
System Theory, 1995., Proceedings of the Twenty-Seventh Southeastern Symposium on
Conference_Location :
Starkville, MS
ISSN :
0094-2898
Print_ISBN :
0-8186-6985-3
Type :
conf
DOI :
10.1109/SSST.1995.390541
Filename :
390541
Link To Document :
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