Android PCM Bytes

Posted by Pintac on Stack Overflow See other posts from Stack Overflow or by Pintac
Published on 2010-05-27T00:30:30Z Indexed on 2010/05/27 0:31 UTC
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android

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audio

Hi

I am using the AudioRecord class to analize raw pcm bytes as it comes in the mic.

So thats working nicely. Now i need convert the pcm bytes into decibel.

I have a formula that takes sound presure in Pa into db.

db = 20 * log10(Pa/ref Pa)

So the question is the bytes i am getting from audiorecorder from the buffer what is it is it amplitude pascal sound pressure or what.

I tried to putting the value into te formula but it comes back with very hight db so i do not think its right

thanks

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