accela: also don't poison ewma state with nans

1 files changed, 1 insertions, 1 deletions

diff --git a/ftnoir_filter_accela/ftnoir_filter_accela.cpp b/ftnoir_filter_accela/ftnoir_filter_accela.cpp
index 2fb00739..9bac5d58 100644
--- a/ftnoir_filter_accela/ftnoir_filter_accela.cpp
+++ b/ftnoir_filter_accela/ftnoir_filter_accela.cpp
@@ -105,7 +105,7 @@ void FTNoIR_Filter::filter(const double* input, double *output)
     {
         Map& m = i >= 3 ? rot : trans;
         
-        smoothed_input[i] = smoothed_input[i] * (1.-alpha) + input[i] * alpha;
+        smoothed_input[i] = smoothed_input[i] * (1.-alpha) + elide_nan(input[i], smoothed_input[i]) * alpha;
         
         const double in = smoothed_input[i];