Improvements for Latvian language

phsource/intonation

@@ -185,3 +185,45 @@ nucleus0 fall  92 8
 nucleus  fall  88 77 75 10
 endtune
 
+
+// latvian
+
+tune s5
+prehead   46 57
+headenv   fall 16
+head       4 80 55 -8 -5
+headextend 0 63 38 13 0
+nucleus0 fall 64 8
+nucleus  fall 70 18 24 12
+endtune
+
+tune c5
+prehead   46 57
+headenv   fall 16
+head       4 80 55 -8 -5
+headextend 0 63 38 13 0
+nucleus0 rise  77 25
+nucleus  rise 78 50 50 80
+endtune
+
+tune q5
+prehead   47 58
+headenv   fall 16
+head       5 75 53 -7 1
+headextend 0 60 55 45 60
+onset 60 48 62
+headlast 60 44 40
+nucleus0 fall-rise  70 50
+nucleus  fall-rise 35 45 60 70
+endtune
+
+tune e5
+prehead   46 57
+headenv   fall 16
+head       5 77 53 -7 0
+headextend 40 80 75 70 67
+headlast 80 72 60
+nucleus0 rise-fall  92 8
+nucleus  rise-fall  88 77 75 10
+endtune
+