I ran wireshark while playing with the mic and captured the resulting Data stream. (Ill post the capture later) but that led me down the path of what is the format of the data.

From the

Universal Serial Bus
Device Class Definition
for
Audio Data Formats

it appears that that most likely format is PCM

2.2.6.1 PCM Format
The PCM (Pulse Coded Modulation) format is the most commonly used audio format to represent audio
data streams. The audio data is not compressed and uses a signed two’s-complement fixed point format. It
is left-justified (the sign bit is the Msb) and data is padded with trailing zeros to fill the remaining unused
bits of the subframe. The binary point is located to the right of the sign bit so that all values lie within the
range [-1,+1).