Im doing project on audio steganography. Im reading wav file in integer format so that i can apply lwt to get integer coefficients,how to get output approximation coefficients and detail coefficient as i need these values to be embedded into image.
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S = audioread('alarm.wav');
sound(S)
LS=liftwave('haar','Int2Int');
[CA,CD]=lwt(double(S),LS);
i am not getting complete code, to solve this problem,
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Walter Roberson
2016 年 2 月 2 日
audioread does not read in integer format by default.
"If you do not specify dataType, or dataType is 'double', then y is of type double, and matrix elements are normalized values between −1.0 and 1.0."
You need to add on the 'native' parameter to get the integer values stored in the file.
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