Lag windowing

Lag windowing is a technique that consists of windowing the autocorrelation coefficients prior to estimating linear prediction coefficients (LPC). The windowing in the autocorrelation domain has the same effect as a convolution (smoothing) in the power spectral domain and helps in stabilizing the result of the Levinson-Durbin algorithm. The window function is typically a Gaussian function.

External links

• PLP and RASTA (and MFCC, and inversion) in Matlab Archived 2016-11-22 at the Wayback Machine

See also

• Linear predictive coding
• Bandwidth expansion