```
In bark_noise_hybridmp we have around line 640
if (fixed <= 0) return;
for (i = 0, fi = 0.f; i < (fixed + 1) / 2; i++, fi += 1.f) {
hi = i + fixed / 2;
lo = hi - fixed;
tN = N[hi] + N[-lo];
tX = X[hi] - X[-lo];
tXX = XX[hi] + XX[-lo];
tY = Y[hi] + Y[-lo];
tXY = XY[hi] - XY[-lo];
A = tY * tXX - tX * tXY;
B = tN * tXY - tX * tY;
D = tN * tXX - tX * tX;
R = (A + fi * B) / D;
if (R > 0.f && R - offset < noise[i]) noise[i] = R - offset;
If fixed is 2, D can be 0, and a divide by 0 exception can be thrown.
I guess tXX has to be 0 as well.
There are probably other places where divide by 0's can occur. This happens to
be the first I have found.
Dividing by 0 is almost always an indication of a bug.
```