Title :
Effect of White-Noise Correction on Linear Predictive Coding
Author :
Bäckström, Tom ; Magi, Carlo
Author_Institution :
Lab. of Acoust. & Audio Signal Process., Helsinki Univ. of Technol.
Abstract :
White-noise correction is a technique used in speech coders using linear predictive coding (LPC). This technique generates an artificial noise-floor in order to avoid stability problems caused by numerical round-off errors. In this letter, we study the effect of white-noise correction on the roots of the LPC model. The results demonstrate in analytic form the relation between the noise floor level and the stability radius of the LPC model
Keywords :
linear predictive coding; speech coding; vocoders; white noise; linear predictive coding; speech coder; white-noise correction; Autocorrelation; Linear predictive coding; Noise generators; Noise level; Numerical stability; Predictive models; Roundoff errors; Speech coding; Speech processing; Stability analysis; Autocorrelation function; linear predictive coding (LPC); numerical stability; speech coding; stability radius; white-noise correction;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2006.881513
