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.
Spasmodic Dysphonia (SD) is an uncommon voice disorder which has a significant impact on the quality of life of the sufferer.It is classified as a dystonia, which is a task-specific neurological movement disorder.pasmodic Dysphonia (SD) is an uncommon voice disorder which has a significant impact on the quality of life of the sufferer.