Silence when searching string forward

[Edhoari Setiyoso <edhoari.s@xxxxxxxxxxx>]

Hi list,

I'm learning regexp with lisp and want to test some search string.
When I use search-forward-regexp  interactively, emacspeak is announcing
the line with search target highlighted.

But when I try to  create a function below for testing purpose, I got no
speech feedback

(defun regexp-test ()
  "Test regexp for learning purpose"
  (interactive)
  (search-forward-regexp "[0-9]"))


Note " "I bound the above function to a key.

I hope anyone can give me a pointer of what went wrong. Any help would
be greatly appreciated.

Best Regards
-- 
Edhoari Setiyoso