Before revision:  The Kazakh speech corpus (KSC) contains around 335 hours of transcribed audio comprising over 154 ,000 utterances spoken by participants from different regions , age groups, and gender .
After revision:  The Kazakh speech corpus (KSC) contains around 335 hours of transcribed audio comprising over 154 ,000 utterances spoken by participants from different regions , age groups, as well as both genders .