公开(公告)号：DE69841527D1

公开(公告)日：2010-04-15

申请号：DE69841527

申请日：1998-07-23

Applicant: IBM

Inventor： BERGL VLADIMIR ,  DAVIES KENNETH ,  ITTYCHERIAH ABRAHAM POOVAKUNNEL ,  MAES STEPHANE HERMAN

IPC: G07C9/00 ,  H04M1/27 ,  H04M3/00 ,  H04M3/38 ,  H04M3/42 ,  H04M3/54 ,  H04M11/00 ,  H04Q3/58

Abstract: Apparatus for preventing unauthorized use of a voice dialing system and, particularly, a call forwarding feature associated with the system whereby system users may forward a telephone number respectively associated therewith to a remote location in order to receive phone calls at the remote location, comprises: a database for pre-storing telephone numbers of system users and for pre-storing acoustic models respectively representative of speech associated with each system user, the acoustic models respectively corresponding to the telephone numbers; and a speaker identification module operatively coupled to the database for obtaining and decoding a speech sample from a potential system user during the potential users' attempt to make a telephone call, the speaker identification module comparing the decoded speech sample obtained with the pre-stored acoustic model associated with the telephone number dialed by the potential user; whereby if the decoded speech sample substantially matches the pre-stored acoustic model, then the phone call attempted by the potential user is terminated.