From 49caeba74bd90f359e3d0831df5f4e3613b03e99 Mon Sep 17 00:00:00 2001
From: Determinant <ted.sybil@gmail.com>
Date: Tue, 25 Aug 2015 11:10:47 +0800
Subject: allow proceeding global transf without frm ext

---
 speech_utils/init.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/speech_utils/init.lua b/speech_utils/init.lua
index 3500eb4..a2d1dc9 100644
--- a/speech_utils/init.lua
+++ b/speech_utils/init.lua
@@ -4,7 +4,7 @@ function nerv.speech_utils.global_transf(feat_utter, global_transf,
                                         frm_ext, frm_trim, gconf)
     local rearranged
     feat_utter = gconf.cumat_type.new_from_host(feat_utter)
-    if frm_ext > 0 then
+    if frm_ext ~= nil and frm_ext > 0 then
         local step = frm_ext * 2 + 1
         -- expand the feature
         local expanded = gconf.cumat_type(feat_utter:nrow(), feat_utter:ncol() * step)
-- 
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