DEVICE FOR TRANSFORMING LINEAR PREDICTION COEFFICIENTS AND METHOD FOR TRANSFORMING LINEAR PREDICTION COEFFICIENTS

摘要

FIELD: physics.;SUBSTANCE: converting device converts the first linear prediction coefficients computed at the first sampling frequency into the second linear prediction coefficients at the second sampling frequency different from the first sampling frequency and comprises: a means for calculating, on the real axis of the unit circle, a power spectrum corresponding to the second linear prediction coefficients at the second sampling frequency, based on the first linear prediction coefficients; a means for calculating, on the real axis of the unit circle, the autocorrelation coefficients from the power spectrum; and a means for converting the autocorrelation coefficients to the second linear prediction coefficients at the second sampling frequency.;EFFECT: effective reduction in the amount of computation, when converting the linear prediction coefficients.;2 cl, 6 dwg