Auto-defined SoundBanks are supported and enabled by default. If you do not want to use them, disable the appropriate option in the Wwise project. In Wwise Authoring, go to Project > Project Settings > SoundBanks and ensure that Enable Auto Defined SoundBanks is cleared. 詳細はSoundBanks Tabを参照してください。For more details about auto-defined SoundBanks in Unity, refer to Using Auto-Defined SoundBanks in Unity.