Which of the following speech coder is used in USDC?(a) Vector Sum Excited Linear Predictive coder(b) Formant Vocoder(c) Multipulse Excited Linear Predictive coder(d) Residual Excited Linear Predictive coderI had been asked this question during an online exam.This question is from United States Digital Cellular (IS-54 and IS-136) in section Wireless Systems and Standards of Wireless/Mobile

Which of the following speech coder is used in USDC?(a) Vector Sum Exc

1.	Which of the following speech coder is used in USDC?(a) Vector Sum Excited Linear Predictive coder(b) Formant Vocoder(c) Multipulse Excited Linear Predictive coder(d) Residual Excited Linear Predictive coderI had been asked this question during an online exam.This question is from United States Digital Cellular (IS-54 and IS-136) in section Wireless Systems and Standards of Wireless/Mobile
Answer» RIGHT choice is (a) Vector SUM Excited LINEAR Predictive coder Easiest explanation: The USDC speech coder is called the Vector Sum Excited Linear Predictive coder (VSELP). This belongs to the class of Code Excited Linear Predictive CODERS (CELP) or Stochastically Excited Linear Predictive coders.

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