Voice Activity Detection Posted on 2018-04-022018-05-11 by Petr Gerhard Premium Content. This is a part which requires a higher (and non-anonymous) Site access level. How to solve this situation: Not registered yet? It’s easy to register – and it’s for free!. May you are simply not logged. Login here, please. Last resort – check your current Site access level here. You can ask Phonexia for “Partner upgrade” on the same page. Posted in Phonexia Academy, Product Training.