# TRTC_TranscodingConfigMode_Template_PureAudio property Null safety

int TRTC_TranscodingConfigMode_Template_PureAudio
final

PureAudio mode. It is suitable for pure audio scenarios such as audio call (AudioCall) and voice chat room (VoiceChatRoom). You only need to set it once through the `setMixTranscodingConfig()` API after room entry, and then the SDK will automatically mix the audios of all mic-on users in the room into the current user's live stream. In this mode, you don't need to set the `mixUsers` parameter in `TRTCTranscodingConfig`; instead, you only need to set the `audioSampleRate`, `audioBitrate` and `audioChannels` parameters.

## Implementation

    static final int TRTC_TranscodingConfigMode_Template_PureAudio = 2;