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Virtual Sound Level Meter

Posted on by Robin Ding Leave a comment Analysis, Test and Measurement
5.0

This project is the MATLAB development of a virtual sound level meter. The program will read in a calibrated .wav file and allow the user to analyze it as one would analyze a sound field with a sound level meter. The software implements Fast, Slow, Impulse and LEQ; A, C and Flat Weighting; Ln and Noise Dose analysis; Octave and 1/3 Octave band analysis; high resolution FFT analysis and spectrograms. Band analysis can be made using fast FFT methods or slower, but ANSI standard methods.

Source code requires MATLAB + Signal Processing Toolbox.
Developed under MATLAB R2010a (but might work with some earlier versions)

Executable version does not require MATLAB and runs under Windows XP, Vista, and Windows 7.

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Website https://vslm.sourceforge.io
Tags
License GNU General Public License version 2.0 (GPLv2)
Features
  • MATLAB Based Software Sound Analyzer
  • Mimics results of an ANSI Standard Integrating Sound Level Meter
  • Includes Lp, LEQ, Octave and 1/3 Octave Band, NC, RC and FFT Analysis