rc2is Convert reflection coefficients to inverse sine parameters isin = rc2is(K) k: input reflection coefficients. Needs to be an array of real numbers between -1 and 1 isin: inverse sine parameters corresponding to the reflection coefficients in input This function returns the inverse sine parameters corresponding to the input reflection coefficients K. output array has isin(i) = 2/pi*asin(k(i)) Example k = [0.3090 0.9801 0.0031 0.0082 -0.0082]; isin = rc2is(k) //Gives inverse sine parameters is2rc rc2poly rc2ac rc2lar Parthe Pandit J.R. Deller, J.G. Proakis, J.H.L. Hansen, "Discrete-Time Processing of Speech Signals", Prentice Hall, Section 7.4.5 modified function to handle char i/p and also changed error statements to match those of MATLAB by Debdeep Dey convert char i/p to their respective ascii values