How can I process audio to get frequencial information in real time?

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I need to process an audio signal (recorded in real-time) to plot the frequency variation as a function of time.
I've programmed an autocorrelation LPC code to get the plot from a WAV file, but now I have to do that in real-time, getting the signal "From Audio Device" (DSP System Toolbox - Simulink).
Which blocks should I use to get that real-tome plot in Simulink?
Thanks. Xavi.

回答(1 个)

Puneet Rana
Puneet Rana 2014-12-2
It also has a 'spectrogram' mode that can show frequency variation across time.

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