wavesynth/Synthesizer: allow empty data

m-labs · Jul 23, 2015 · 6b0e120 · 6b0e120
1 parent 5b1165f
commit 6b0e120
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/artiq/wavesynth/compute_samples.py b/artiq/wavesynth/compute_samples.py
@@ -9,6 +9,8 @@ def __init__(self):
         self.c = [0.0]
 
     def set_coefficients(self, c):
+        if not c:
+            c = [0.]
         self.c = copy(c)
         discrete_compensate(self.c)
 
@@ -25,6 +27,8 @@ def __init__(self):
         self.c0 = 0.0
 
     def set_coefficients(self, c):
+        if not c:
+            c = [0.]
         self.c0 = c[0]
         c1p = c[1:]
         discrete_compensate(c1p)