Verfahren und Vorrichtung zur Erkennung synthetisierter Sprache

Details

Veröffentlichungs-Nr.

EP2843660

Aktenzeichen

EP14181677

Anmeldetag

20. August 2014

Veröffentlichung

12. Juni 2019

Erteilung

12. Juni 2019

Rechtsraum

EP

IPC

G10L25/51G10L17/26

Abstract

Computer systems employing speaker verification as a security approach to prevent un-authorized access by intruders may be tricked by a synthetic speech with voice characteristics similar to those of an authorized user of the computer system. According to at least one example embodiment, a method and corresponding apparatus for detecting a synthetic speech signal include extracting a plurality of speech features from multiple segments of the speech signal; analyzing the plurality of speech features to determine whether the plurality of speech features exhibit periodic variation behavior; and determining whether the speech signal is a synthetic speech signal or a natural speech signal based on whether or not a periodic variation behavior of the plurality of speech features is detected. The embodiments of synthetic speech detection result in security enhancement of the computer system employing speaker verification.

Anmelder

Firma

Nuance Communications, Inc.

Land

🇺🇸 USA

Fachgebiete