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.
Those codes were helped me in my works. But I want to use them in simulink. But of course, some functions dont work with embeddeb functions in simulink. for example "find". did you do before to carry this program to simulink or Can you offer me some way instead of using "find" ? thanks
It is a nice model of Sound Level Meter. My observation is: In the code, A-weighting is performed in frequency domain (i.e. multiplication in frequency domain). I feel like, if the A-weighting is in time domain (filtering, of input signal which is sampled at variable sampling frequency), the computation of fft can be saved.
05 Jun 2008
nguyen quy
I want to see the source coding
28 Feb 2008
Shufang Dong
Generally ok, but with miscellaneous errors need to be correct such as the A-weighting filter should be applied to pressure square rather than pressure, and the last formula of RMS of filtered pressure should not be divided by delta t.
18 May 2007
smekfm gtlo
i am to try this software
05 Jan 2007
Steven Kolak
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MATLAB supports audio acquisition using the Data Acquisition Toolbox.
View the MATLAB sound resource page for additional demos, downloadable code examples, and user stories:
http://www.mathworks.com/sound
05 Dec 2006
kesho hassan
it is goog
18 Oct 2006
radwa magdy
23 Sep 2006
Piyorot Khongchuay
cool
18 Jan 2006
Rupesh Sancheti
the information given about the products using matlab is excellent