📄 wavgenr_c.mht
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Date: Wed, 27 Sep 2006 22:44:05 +0800
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<BODY><PRE>/* wavgenr.c - wavetable generator (rounding method) */
void gdelay2();
double wavgenr(D, w, A, F, q) /* usage: y =3D wavgenr(D, w, A, F, =
&q); */
int D; /* \(D\) =3D wavetable length */
double *w, A, F, *q; /* \(A\) =3D amplitude, \(F\) =3D =
frequency, \(q\) =3D offset index */
{
double y;
int k;
k =3D (int) (*q + 0.5); /* round */
y =3D A * w[k];
gdelay2(D-1, D*F, q); /* shift \(c =3D DF\) =
*/
return y;
}
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