Change default document settings

* Set mean_responsiveness to 0.

* Decrease default edge strength from 2.0 to 1.0. 2.0 seems to cause
  waves to lose track too often (but the optimum value varies by song).

* Increase default slope width to 0.25 period. It seems to work better
  in general. You can adjust it on a case-by-case basis though.

  The default value when loading older files missing the key has also
  changed to 0.25, since slope width is now necessary for triggering
  instead of being added to edge triggering in special cases.

* Set default "Reset Below Match" to 0.3. This level is harmless but not
  very useful (besides clearing the buffer upon silence, like all
  nonzero values). The optimal value varies wildly by song and "Buffer
  Responsiveness".

corrscope/corrscope.py

@@ -118,7 +118,9 @@ def template_config(**kwargs) -> Config:
         trigger_subsampling=1,
         render_subsampling=2,
         trigger=CorrelationTriggerConfig(
-            edge_strength=2,
+            mean_responsiveness=0.0,
+            edge_strength=1.0,
+            reset_below=0.3,
             responsiveness=0.5,
             pitch_tracking=SpectrumConfig(),
             # post_trigger=ZeroCrossingTriggerConfig(),

corrscope/triggers.py

@@ -281,7 +281,7 @@ class CorrelationTriggerConfig(
     edge_strength: float
 
     # Slope detection
-    slope_width: float = with_units("period", default=0.07)
+    slope_width: float = with_units("period", default=0.25)
 
     # Correlation detection
     buffer_strength: float = 1