Decreasing look-ahead of default model to 1 frame

dnn/autogen.sh

@@ -6,7 +6,7 @@ srcdir=`dirname $0`
 test -n "$srcdir" && cd "$srcdir"
 
 #SHA1 of the first commit compatible with the current model
-commit=3b1eab4
+commit=97e64b3
 ./download_model.sh $commit
 
 echo "Updating build configuration files for lpcnet, please wait...."