An LPC vocoder for efficient implementation
F Sugiyama, M Nakamura - ICASSP'81. IEEE International …, 1981 - ieeexplore.ieee.org
Linear prediction has been widely used in speech coding. However, a large amount of
calculation is necessary for parameter extraction by the autocorrelation method, so it is not
suited for hardware implementation. This paper proposes a new analysis method, involving
iterative method in the lattice circuit for successive K parameter approximations. In the
iterative method, the improved hybrid algorithm was found best, from the viewpoint of high
speed convergence for speech. For pitch extraction, partly divided average magnitude …
calculation is necessary for parameter extraction by the autocorrelation method, so it is not
suited for hardware implementation. This paper proposes a new analysis method, involving
iterative method in the lattice circuit for successive K parameter approximations. In the
iterative method, the improved hybrid algorithm was found best, from the viewpoint of high
speed convergence for speech. For pitch extraction, partly divided average magnitude …
An LPC vocoder for efficient implementation
M Nakamura, F Sugiyama - ICASSP'81. IEEE International Conference …, 2005 - cir.nii.ac.jp
Linear prediction has been widely used in speech coding. However, a large amount of
calculation is necessary for parameter extraction by the autocorrelation method, so it is not
suited for hardware implementation. This paper proposes a new analysis method, involving
iterative method in the lattice circuit for successive K parameter approximations. In the
iterative method, the improved hybrid algorithm was found best, from the viewpoint of high
speed convergence for speech. For pitch extraction, partly divided average magnitude …
calculation is necessary for parameter extraction by the autocorrelation method, so it is not
suited for hardware implementation. This paper proposes a new analysis method, involving
iterative method in the lattice circuit for successive K parameter approximations. In the
iterative method, the improved hybrid algorithm was found best, from the viewpoint of high
speed convergence for speech. For pitch extraction, partly divided average magnitude …
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