Generation of ADSR digital tones using a Digital Signal Processor

Authors

  • Eddie Raúl Muñoz Vara Facultad de Ingeniería Eléctrica y Electrónica, Universidad Nacional de Ingeniería, Lima - Perú

DOI:

https://doi.org/10.21754/tecnia.v12i2.497

Abstract

This paper develops two synthesis tools for sound waveforms, namely, tone synthesizer and a ADSR
(Attack, Decay, Sustein and Release) generator to form the tone amplitude. Such tools are coded in Matlab and programmed in a Motorola DSP568. By employing the musical synthesis tool of Matlab. previously installed into a personal computer, we are able to modify the period of a waveform sound corresponding to an instrument. It is worth to mention that musical sounds synthetized in this way can be transmitted by means of modems. 

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References

[1] J. Chowning, "The synthesis of complex audio spectra by means of frequency modulation," Journal of the Audio Engineering Society, Sept. 1973, Vol. 21, No. 7, pp.526-534.

[2] S. Orphanidis, "Introduction to Signal Processing. Prentice-Hall, Upper Saddle", NJ, 1996.

[3] Toollbox "Comunicator for use with Matlab". The Math Works Inc. User's guide version 1.3.

[4] User's Manual DSP56L811EVM, Motorola INC. "Evaluation Module".

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Published

2002-12-01

How to Cite

[1]
E. R. Muñoz Vara, “Generation of ADSR digital tones using a Digital Signal Processor”, TECNIA, vol. 12, no. 2, Dec. 2002.

Issue

Vol. 12 No. 2 (2002)

Section

Articles

License

Copyright (c) 2002 TECNIA

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