pitchcontrib.m

来自「ITU-T G.723.1 Speech Coder: Matlab imple」· M 代码 · 共 16 行

function  ep = PitchContrib (N, L, b, eMem, Pitchpar)
% Find the pitch contribution to the excitation

% $Id: PitchContrib.m 1.5 2004/08/06 G.723.1-v2r1a $

POffs = Pitchpar.POffs;

% Get the pitch-repeated excitation, (N+NCof-1) x 1
eL = RepExc (eMem, N, L, POffs);

Nc = length (POffs);
y = filter (b, 1, eL);
ep = y(Nc:end);      % Ignore the Nc-1 warm-up points

return