[IEEE 2017 20th Conference of the Oriental Chapter of the International Coordinating Committee on Speech Databases and Speech I/O Systems and Assessment (O-COCOSDA) - Seoul, Korea (South) (2017.11.1-2017.11.3)] 2017 20th Conference of the Oriental Chapter of the International Coordinating Committee on Speech Databases and Speech I/O Systems and Assessment (O-COCOSDA) - Rediscovering 50 years of discoveries in speech and language processing: A survey