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Thread Subject:
plotting a graph of a voice signal

Subject: plotting a graph of a voice signal

From: Arisa Onwuka

Date: 9 Feb, 2009 11:27:01

Message: 1 of 3

Hello All,

i got a voice signal into matlab using the .wav format that windows supports. i used the wavread function available in matlab. please can one tell me how to plot a frequency graph of this voice signal so that i can see it.

Thanks

Subject: plotting a graph of a voice signal

From: Joerg Buchholz

Date: 9 Feb, 2009 13:08:01

Message: 2 of 3

"Arisa Onwuka" <onwuka.arisa@ieee.org> wrote in message <gmp3u5$ck3$1@fred.mathworks.com>...
> Hello All,
>
> i got a voice signal into matlab using the .wav format that windows supports. i used the wavread function available in matlab. please can one tell me how to plot a frequency graph of this voice signal so that i can see it.
>
> Thanks

Maybe 'doc fft' could help ...

Subject: plotting a graph of a voice signal

From: gehan Mustafa

Date: 9 Feb, 2009 13:26:02

Message: 3 of 3

"Arisa Onwuka" <onwuka.arisa@ieee.org> wrote in message <gmp3u5$ck3$1@fred.mathworks.com>...
> Hello All,
>
> i got a voice signal into matlab using the .wav format that windows supports. i used the wavread function available in matlab. please can one tell me how to plot a frequency graph of this voice signal so that i can see it.
>
> Thanks
try the fft function..but use the absolute value of the fft to see the magnitude only, and take half the vector since its an even function, and so repeats itself..
Regards,

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