Is it possible to save audio sample values from alteration while using wavwrite function of matlab?

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manisha sharma
manisha sharma 2015-4-21
评论： manisha sharma 2015-4-23
Hello, I am manipulating values of audio samples for audio steganography.When i have my manipulated audio sample object, i want to write it as a new audio file using wavwrite. But when i create object of this newly created audio file, i find sample values different from the previous values of samples which i had manipulated.
Is there any method to control wavwrite function in order to keep my sample values as same as these were before wavwrite?

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回答（1 个）

Image Analyst
Image Analyst 2015-4-21
You're either writing out the same, original audio data, not the altered data like you thought, or you're reading in the same original audio data, not the altered file.
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manisha sharma
manisha sharma 2015-4-22
As you asked i tried it at different frequencies like 88200,10000,1000 and so on. But it still causing problem.
I have no idea what to do next.Please help if you can.
Thanks...
manisha sharma
manisha sharma 2015-4-23
Okay finally i got the way to do it.This time i have chosen the bits in wavwrite as '32' like this:
>>wavwrite(y_enc,44100,32,'new_audio.wav')
It is working for me.
I think this can be helpful for others having the same problem.

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