The USB Audio Device Class Definition for Basic Audio Functions applies to all USB Audio Functions that are based on the Universal Serial Bus Device Class Definition for Audio Devices Release 3.0. It defines baseline audio functionality for all ADC 3.0 compliant Hosts and Devices.dition 1.0 2019-09 INTERNATIONAL STANDARD NORME INTERNATIONALE colour inside Universal serial bus interfaces for data and power – Part 1-6: Common components – USB Audio 3.0 device class definition basic functions Interfaces de bus universel en série pour les données et l'alimentation électrique – Partie 1-6: Composants communs – Définition de classes de dispositifs USB Audio 3.0 pour fonctions de base IEC 62680-1-6:2019-09(en-fr)