Dear group,
The impulse response of a pure recursive filter with linear prediction
coefficients as filter coefficients is a good spectral description of
a signals spectrum but the Levinsons recursion always calculates a
fixed number of coefficients.
Does anyone know an algorithm that calculates linear prediction
coefficients and stops calculation after a certain amount of
error-energy is under-run?
Regards,
Konstantin
LP algorithm that stops after a certain amount of energy is reached
Started by ●December 31, 2006
Reply by ●January 25, 20072007-01-25
Konstantin,
Within Durbin's (for that matter, also Levinson's) recursion, you have
to calculate the residual energy at each order step. So, all you need is
to test it and break out of the loop when underrun occurs.
Regards,
Miguel
geistgesicht wrote:
> Dear group,
>
> The impulse response of a pure recursive filter with linear prediction
> coefficients as filter coefficients is a good spectral description of
> a signals spectrum but the Levinsons recursion always calculates a
> fixed number of coefficients.
>
> Does anyone know an algorithm that calculates linear prediction
> coefficients and stops calculation after a certain amount of
> error-energy is under-run?
>
> Regards,
> Konstantin
>
Within Durbin's (for that matter, also Levinson's) recursion, you have
to calculate the residual energy at each order step. So, all you need is
to test it and break out of the loop when underrun occurs.
Regards,
Miguel
geistgesicht wrote:
> Dear group,
>
> The impulse response of a pure recursive filter with linear prediction
> coefficients as filter coefficients is a good spectral description of
> a signals spectrum but the Levinsons recursion always calculates a
> fixed number of coefficients.
>
> Does anyone know an algorithm that calculates linear prediction
> coefficients and stops calculation after a certain amount of
> error-energy is under-run?
>
> Regards,
> Konstantin
>
