Beginner: Fastest way to cast/copy byte() into single()

Question

I've got a byte() array returned as result of directx sound capture, but for other parts of my program I want to treat the results as single(). Is trundling down the array item by item the fastest way of doing it or is there a clever way to do it ?

The code that gets it is

CType(Me._applicationBuffer.Read(Me._nextCaptureOffset, GetType(Byte), LockFlag.None, LockSize), Byte())

which creates the byte array, can Ctype handle single ? (note, I can't figure out a way to do it!)

Answer 1

Try

float f = BitConverter.ToSingle(bytearray, 0);

In VB (I think):

Dim single s;
s = BitConverter.ToSingle(bytearray, 0);

Answer 2

Sorry, no. x=BitConverter.ToSingle(bytearray,0) returns a single element of type single, not an array of single. (value x = -1.58998939E+35 {Single}, if that helps!)

Answer 3

public float[] ByteArrayToFloatArray(byte[] byteArray)
{
    float[] floatArray = new float[byteArray.Length / 4];
    for (int i = 0; i < floatArray.Length; i++)
    {
        floatArray[i] = BitConverter.ToSingle(byteArray, i * 4);
    }
    return floatArray;
}

The fastest way to do this (in terms of performance as opposed to how long it takes to write) would probably be to use the CopyMemory API call.