diff options
Diffstat (limited to 'libs/ardour/kmeterdsp.cc')
| -rw-r--r-- | libs/ardour/kmeterdsp.cc | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/libs/ardour/kmeterdsp.cc b/libs/ardour/kmeterdsp.cc index 181378cf76..35c95c2daf 100644 --- a/libs/ardour/kmeterdsp.cc +++ b/libs/ardour/kmeterdsp.cc @@ -52,8 +52,8 @@ void Kmeterdsp::process (float *p, int n) 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. @@ -75,6 +75,8 @@ void Kmeterdsp::process (float *p, int n) 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; |