_omega = 9.72f / fsamp; // ballistic filter coefficient
}
-void Kmeterdsp::process (float *p, int n)
+void Kmeterdsp::process (float const *p, int n)
{
// Called by JACK's process callback.
//
float s, z1, z2;
// Get filter state.
- z1 = _z1;
- z2 = _z2;
+ z1 = _z1 > 50 ? 50 : (_z1 < 0 ? 0 : _z1);
+ z2 = _z2 > 50 ? 50 : (_z2 < 0 ? 0 : _z2);
// Perform filtering. The second filter is evaluated
// only every 4th sample - this is just an optimisation.
z2 += 4 * _omega * (z1 - z2); // Update second filter.
}
+ if (isnan(z1)) z1 = 0;
+ if (isnan(z2)) z2 = 0;
// Save filter state. The added constants avoid denormals.
_z1 = z1 + 1e-20f;
_z2 = z2 + 1e-20f;