Which of the non-linear transform is generally used to improve the coding of reflection coefficient?(a) Long area ratio transform(b) Mutual information(c) Least square(d) InterpolationI got this question in semester exam.I'd like to ask this question from Linear Predictive Coders in section Speech Coding of Wireless/Mobile

Which of the non-linear transform is generally used to improve the cod

1.	Which of the non-linear transform is generally used to improve the coding of reflection coefficient?(a) Long area ratio transform(b) Mutual information(c) Least square(d) InterpolationI got this question in semester exam.I'd like to ask this question from Linear Predictive Coders in section Speech Coding of Wireless/Mobile
Answer» Correct answer is (a) Long AREA ratio transform For explanation: Long area ratio (LAR) transform is GENERALLY USED to improve the coding of reflection coefficient. This non linear TRANSFORMATION reduces the sensitivity of reflection coefficients to quantization errors. LAR performs an inverse HYPERBOLIC tangent mapping of reflection coefficients.

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