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Real time octave analysis

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4.2 | 4 ratings Rate this file 35 Downloads (last 30 days) File Size: 11.5 KB File ID: #3076
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Real time octave analysis

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04 Mar 2003 (Updated )

FFT and 3rd octave display of an incoming analog input signal.

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Description

This is an extension of the real time FFT demo provided with the data acquisition toolbox (demoai_fft). It adds digital third octave filtering to the incoming data stream.

Works with any analog input source from the Data Acquisition Toolbox.

This uses a few files from the Octave Toolbox, with slight modifications and additions. The necessary files are included in this download, but you should get the original (see Contributing Files, below).

Acknowledgements

Octave inspired this file.

This file inspired Sound Level Meter.

Required Products Data Acquisition Toolbox
MATLAB release MATLAB 6.5 (R13)
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Comments and Ratings (5)
18 Jan 2008 meng qinglin

I've not read it carefully,however,from the result of it I think it is good.
The figure it give tells me the voltage ?spectram and Octave.That is good.

13 Nov 2006 Andrew Kibler

Change line 332 TimerFcn to TimerAction for it to work for me (Matlab R12), after that works well!

11 Sep 2006 mohamed fazal

This toolbox is very useful for the reasearch about the octave analysis

05 Apr 2005 steve lawson

very nice example of using fft on a live data stream, works well with MCC daq as well as soundcard. Easy to use with minimal knowledge of DAQ toolbox

11 Mar 2003 Boyko Stoimenov

Still haven't tried it (don't have the DAQ toolbox), but if you're going to use this submission, take a look at my BUG warning on 'octave'. (Sorry for its ugly formatting, I didn't know new lines are ignored)

Updates
12 Jan 2010

copyright and license update.

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