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VAD

(1) (Value Added Dealer) See VAR.

(2) (Voice Activated Dialing) Dialing a phone by speaking the names or numbers. VAD is a common capability on smartphones.

(3) (Voice Activity Detection) An algorithm that determines when an audio signal is a human's voice. VAD is used in voice over IP (VoIP) and speech recognition systems in order to not waste computer processing cycles if the sound is not human speech.



VAR

(Value Added Reseller) An organization that adds value to a system and resells it. For example, it could purchase a CPU and peripherals from different vendors, graphics software from another and package it all together as a specialized CAD system. Although VARs typically repackage products, they might also include programs they have developed themselves. The terms VAR and ISV are often used interchangeably. See OEM, ISV and systems integrator.



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