Member Avatar for rohan1020

Hello...

I've been trying to learn about audio sampling in C++ for past few days. What I learnt was that computer converts analog signal (of sound) and converts it to digital discreet signals and unit called a sample. Also there may be around 40,000 samples taken in a second.

My question is what information do each sample contain. Is it the sound's intensity level at that point, its pressure displacement, or anything else.

In c++, there is a structure "WAVEHDR" which stores the digitized information of each sample converted from analog signal.

http://msdn.microsoft.com/en-us/library/ms713724(v=vs.85).aspx

What exactly is the information stored in the buffer ('lpdata') corresponding to each sample. I mean, how do I interpret that information?

thanks....

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  • Latest Post Latest Post by Moschops
Member Avatar for Moschops

It depends on the sensor you are using. Some microphones measure pressure, some measure rate of change of pressure, some measure others things.

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