Federated Learning Toolkit with Voice-based User Verification Demo. - Prathamesh Mandke; Rachel Oberst; Matthias Reisser; Avijit Chakraborty; Christos Louizos; Joseph Soriaga; Daniel Madrigal Diaz; Andre Manoel; Nalin Singal; Jeff Omhover; Robert Sim (INTERSPEECH, 2023)