The Gandalf speaker verification database
Håkan Melin · 1996
The Gandalf speech database has been designed for use in research on automatic speaker verification. 86 customer speakers and 100 impostor speakers have been recorded in up to 24 telephone calls per speaker during a period of up to 12 months. In addition to speech files, Gandalf includes a relational database with a twofold function: it stores information on subjects and calls, and it is a tool for making quantitative and qualitative analyses of speaker verification test data. The customer speaker part of the database is described, and some of the motivation behind the design is given. Introduction The increase in the use of automated telephone services, such as telephone banking and phonecard calling, during the last few years, have boosted the interest in means for securely identifying a person making a telephone call. Given the currently available telephone infrastructure, where nothing but the speech signal is transmitted, recognizing the voice of the speaker is an appealing possi...