The USB microphone is just a regular microphone with a USB Sound pod (an external sound card) enabling connection to your USB Port. The reason this is often recommended is soundcards built into the motherboard are often not well shielded and pickup electronic noise. This electronic noise will make it anywhere from difficult to impossible for speech recognition software to work accurately. When considering any speech recognition microphone background noise canceling should be a major consideration as well as comfort. The eMicrophones web site not only has descriptions based on our use in testing but most have videos that show how to wear and use these microphones.I also think that, for the heavy speech user, an USB headset is a must.
We have found that Show Numbers works excellently for the applications we use. These are generally standard Microsoft Windows applications. Which applications have you found difficulty with?ps: depending on the software you are working, "show numbers" does not work all that great.
Marty Markoe, eMicrophones, Inc.
Microsoft MVP