How are sounds digitally recorded?

Question

C++ / C#

There is this code:

static WasapiLoopbackCapture wi;
        static void Main(string[] args)
        {
            wi = new WasapiLoopbackCapture();
            wi.DataAvailable += new EventHandler<WaveInEventArgs>(wi_DataAvailable);
            wi.StartRecording();
        }


       static void wi_DataAvailable(object sender, WaveInEventArgs e)
        {
            byte[] bytes = e.Buffer;


        }

I want to decompose into frequencies and for this you need to have a list of amplitudes to decompose through the Fourier
But I can’t find how the amplitudes are written in e.Buffer:
someone writes that every 2 bytes is 1 point on the amplitude graph, someone says that this is for gray - 1 left 2 right.
Tell me how the amplitudes are written there and how to get them for further use in the Fourier transform.

Answer 1

A ready
-made example that does what you need