diff --git a/easelib.lua b/easelib.lua
index ea5a901..35aee15 100644
--- a/easelib.lua
+++ b/easelib.lua
@@ -34,17 +34,17 @@ table.insert(self, {'inverse', function(t) return t * t * (1 - t) * (1 - t) / (0
 
 table.insert(self, {'popElastic', function(t, damp, count)
   return (1000 ^ -(t ^ damp) - 0.001) * sin(count * pi * t)
-end, {1, 10, 1.4, 'damp'}, {1, 25, 6, 'count'}, type = 'pulse'})
+end, {0, 10, 1.4, 'damp'}, {1, 25, 6, 'count'}, type = 'pulse'})
 table.insert(self, {'tapElastic', function(t, damp, count)
   return (1000 ^ -((1 - t) ^ damp) - 0.001) * sin(count * pi * (1 - t))
-end, {1, 10, 1.4, 'damp'}, {1, 25, 6, 'count'}, type = 'pulse'})
+end, {0, 10, 1.4, 'damp'}, {1, 25, 6, 'count'}, type = 'pulse'})
 table.insert(self, {'pulseElastic', function(t, damp, count)
   if t < .5 then
     return self.tapElastic(t * 2, damp, count)
   else
     return -self.popElastic(t * 2 - 1, damp, count)
   end
-end, {1, 10, 1.4, 'damp'}, {1, 25, 6, 'count'}, type = 'pulse'})
+end, {0, 10, 1.4, 'damp'}, {1, 25, 6, 'count'}, type = 'pulse'})
 
 table.insert(self, {'impulse', function(t, damp)
   t = t ^ damp