Essays about: "Voice Activity Detector VAD"

Found 3 essays containing the words Voice Activity Detector VAD.

1. 1. Methods for Improving Voice Activity Detection in Communication Services

   University essay from Institutionen för informationsteknologi

   Author : Amardeep Amardeep; [2013]
   Keywords : ;

   Abstract : A video conferencing application has to display only active sites due to limited display area that are identified using voice activity detector  (VAD) and maintain a list of the most vocally active sites. In a typical video conferencing room there will be people typing on their computers or laptops and this can cause problem when the VAD classifies the keyboard typing signals as speech activity even there is nobody talking in the room. READ MORE

3. 2. A Survey and Evaluation of Voice Activity Detection Algorithms

   University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Author : Seshashyama Sameeraj Meduri; Rufus Ananth; [2012]
   Keywords : Voice Activity Detector VAD ; Zero-Crossing Rate; Energy Threshold ;

   Abstract : The term Voice Activity Detector (VAD) refers to a class of signal processing methods that detects if short segments of a speech signal contain voiced or unvoiced signal data. A VAD is normally using decision rules based on selected estimated signal features. READ MORE

4. 3. Voice Activity Detection in the Tiger Platform

   University essay from Institutionen för systemteknik

   Author : Hampus Thorell; [2006]
   Keywords : Voice activity detection; Comfort noise generation; G.729B; G.729D; G.729F; Fuzzy VAD; AMR; EFR; HR; FR; LPC.; Discontinuous transmission; Speech coding; Linear predictive coding; Tiger; VAD; CNG; DTX; G.729;

   Abstract : Sectra Communications AB has developed a terminal for encrypted communication called the Tiger platform. During voice communication delays have sometimes been experienced resulting in conversational complications. READ MORE