Wi-Fi is a trademark of the Wi-Fi Alliance. The Wi-Fi Certified trademark can only be used by Wi-Fi products that successfully complete Wi-Fi Alliance interoperability certification testing.
Voice Disorders. A voice disorder is when the voice has a problem with pitch, volume, tone, and other qualities. These problems occur when the vocal cords don't vibrate normally. Your voice is the sound that air makes when it is forced out of your lungs and passes over your vocal cords.
MTP may be the primary problem causing the voice disorder (often called muscle tension dysphonia or MTD), or it may be present as a result of another problem. The symptoms of MTP include soreness of the muscles around the larynx and a voice that fatigues easily.