Suppose you have recorded a voice while you were on the road and now you want to store it or hear it from your windows os then you can easily do it.It will save your iPhone battery power and you can save it in your PC for a long time.To do this you simply need to follow the below simple steps.
Launch iTunes on yourPC.
Connect your iPhone to a USB port on your computer with the USB cable.
Click the icon of your iPhone under "Devices" in the left pane of the iTunes application window.
Click "Music" tab at the top of the iTunes window.
Click the "Include Voice Memos" check box to select it.
Click "Apply." The voice memos that you recorded on your iPhone transfer via the USB cable to iTunes.
After storing it to your PC you can easily hear the voice memo in your pc.
Please let me know if you have any further question.