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Noise Measuremet with PCSGU250 and Matlab Implementation



16 Jul 2012 (Updated )

Noise measurement using data from the Velleman PCSGU250 measurement complex.

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The code presented here concerns the processing of data stored in the Data Storage Object (DSO file) obtained from the Velleman PCSGU250 measurement complex.

The main purpose is to calculate the Noise Power Spectral Density (Noise PSD) and Noise Voltage referred to the output of the two or four terminal circuit using А–weighting filter.

The code is based on the theory described in:

[1] A. Kay, Operational Amplifier Noise: Techniques and Tips for Analyzing and Reducing Noise (Chapter 5). Oxford, Newnes, 2012.

[2] D. Manolakis, V. Ingle. Applied Digital Signal Processing (Chapter 14). Cambridge, Cambridge University Press, 2011.

[3] Design Response of Weighting Networks for Acoustical Measurements ANSI S1.42-2001. Washington, American National Standards Institute, 2001.

[4] Хр. Живомиров. Измерване на някои шумови параметри на усилвателите с приложение на Matlab. Трети международен научен конгрес „50 год. Технически университет – Варна”, 4 – 6 Октомври 2012, Варна. Third International Scientific Congress Proceedings, ISBN 978-954-20-0551-3, Vol. 2, pp. 32-37, 2012.


Sound Level Meter inspired this file.

Required Products Signal Processing Toolbox
MATLAB release MATLAB 7.11 (R2010b)
Other requirements Velleman PCSGU250 Measurement Complex or Velleman PCSGU250 DSO
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Comments and Ratings (1)
26 Oct 2012 Sashi Kanth .....

thanks for sharing useful for spectral analysis on PSD...

22 Jan 2014

A new version of A-weighting filter has been added.

27 Jan 2014

Typos correction has been made.
A new reference literature has been added.

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