diff --git a/demo/voices/en-Alice_woman.wav b/demo/voices/en-Alice_woman.wav
index 1517539..459c39d 100644
Binary files a/demo/voices/en-Alice_woman.wav and b/demo/voices/en-Alice_woman.wav differ
diff --git a/demo/voices/en-Alice_woman_bgm.wav b/demo/voices/en-Mary_woman_bgm.wav
similarity index 100%
rename from demo/voices/en-Alice_woman_bgm.wav
rename to demo/voices/en-Mary_woman_bgm.wav