From 0ee4267b85dab9e1303ee6617aaec0e8f0bf73cf Mon Sep 17 00:00:00 2001
From: Anh Hoang Nguyen <hoanganhA91013@gmail.com>
Date: Wed, 13 Mar 2019 20:56:19 +0700
Subject: [PATCH] vi: modify Northern Vietnamese voice for clearer sound

---
 espeak-ng-data/lang/aav/vi | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/espeak-ng-data/lang/aav/vi b/espeak-ng-data/lang/aav/vi
index c988a8e7cf..2408f979ae 100644
--- a/espeak-ng-data/lang/aav/vi
+++ b/espeak-ng-data/lang/aav/vi
@@ -2,4 +2,15 @@ name Vietnamese (Northern)
 language vi
 
 words 1
-pitch 100 180
+pitch 80 160
+
+formant 1 87 82 76
+formant 2 94 56 42
+formant 3 93 52 130
+formant 4 110 76 65
+formant 5  102 45 20
+formant 6  40 50 50
+formant 7 60 50 60
+formant 8 100 50 40
+
+tone 900 125  1600 100 2400 80
\ No newline at end of file