Sound Level Meter

version (1.84 MB) by Douglas Lanman
Implements real-time spectrum analyzer and displays decibel level.


Updated Fri, 13 Jan 2006 10:35:37 +0000

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This tutorial/demo presents the design of a sound level meter in Matlab. The Data Acquisition Toolbox is used to implement a real-time spectrum analyzer. The decibel meter is implemented in the frequency domain using Parseval's relation.

Documentation is provided in the included PDF.

Further information is available at:

Cite As

Douglas Lanman (2022). Sound Level Meter (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R14SP3
Compatible with any release
Platform Compatibility
Windows macOS Linux

Inspired by: Real time octave analysis

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