Swept-Sine Analysis
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This method, known as swept-sine, log-chirp, swept-tone, or sine sweep uses an increasing frequency sinusoid to stimulate an acoustic device under test. The response is processed to compress the response to an impulse response. This method is robust against noise, time variance, and weak nonlinearities.
SYNTHSWEEP Synthesize a logarithmic sine sweep.
[sweep invsweepfft sweepRate] = synthSweep(T,FS,f1,f2)
generates a logarithmic sine sweep that starts at frequency f1 (Hz),
stops at frequency f2 (Hz) and duration T (sec) at sample rate FS (Hz).
EXTRACTIR Extract impulse response from swept-sine response.
[irLin, irNonLin] = extractIR(sweep_response, invsweepfft)
Extracts the impulse response from the swept-sine response. Use
synthSweep.m first to create the stimulus; then pass it through the
device under test; finally, take the response and process it with the
inverse swept-sine to produce the linear impulse response and
non-linear simplified Volterra diagonals. The location of each
non-linear order can be calculated with the sweepRate - this will be
implemented as a future revision.
Free download from Shareware Connection - This method, known as swept-sine, log-chirp, swept-tone, or sine sweep uses an increasing frequency sinusoid to stimulate an acoustic device under test.
Version: 1.0 | Size: 10 KB | Platform: Matlab, Scripts
Released Date: 20-04-2013 | Rating: 0 | Title: Swept-Sine Analysis
Author Url: http://www.mathworks.com
Program Info Url: http://www.mathworks.com
Download Url: http://www.mathworks.com/matlabcentral/fx_files/29187/3/SweptSineAnalysis.zip
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