let user decide whether do global_transf in the reader

1 files changed, 6 insertions, 5 deletions

diff --git a/htk_io/init.lua b/htk_io/init.lua
index da91980..af92140 100644
--- a/htk_io/init.lua
+++ b/htk_io/init.lua
@@ -32,14 +32,15 @@ function TNetReader:get_data()
     -- read HTK feature
     local feat_utter = self.feat_repo:cur_utter(self.debug)
     -- global transf
-    local transformed = nerv.speech_utils.global_transf(feat_utter,
-                            self.global_transf, self.frm_ext, self.gconf)
-
-    res[self.feat_id] = transformed
+    if self.global_transf ~= nil then
+        feat_utter = nerv.speech_utils.global_transf(feat_utter,
+                        self.global_transf, self.frm_ext, self.gconf)
+    end
+    res[self.feat_id] = feat_utter
     -- add corresponding labels
     for id, repo in pairs(self.lab_repo) do
         local lab_utter = repo:get_utter(self.feat_repo,
-                                        transformed:nrow(),
+                                        feat_utter:nrow(),
                                         self.debug)
         res[id] = lab_utter
     end