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Audio signal max/average amplitude

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Azimah
Azimah 2011-11-21
Hello, I suppose this is an easy question for some. Can anyone provide me with matlab coding on finding max amplitude/max samples/average amplitudes/amplitude range from a .wav audio signal?
Thank you in advance
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Walter Roberson
Walter Roberson 2011-11-21
First you have to define what you mean by "amplitude". See another related question from earlier today: http://www.mathworks.com/matlabcentral/answers/21825-what-is-amplitudes-of-a-wav-signal
Azimah
Azimah 2011-11-22
I'm trying to get the max/average amplitude in terms of the voltage that pass by the microphone to the 'line in' connector.

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Rick Rosson
Rick Rosson 2011-11-22
>> doc wavread
>> doc max
>> doc min
>> doc mean
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Walter Roberson
Walter Roberson 2011-11-22
The 'native' option of wavread() will likely be desired.
Voltage calculation would be assisted by reference to http://en.wikipedia.org/wiki/Line_level#Nominal_levels

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