Hello @qiuyingzhang,
Answering your questions:
Whether versions that do not support this demo support VIT? If so,what voice-related examples can I refer to?
Yes, the latest SDK versions do support VIT. You can enable it during SDK configuration in the SDK Builder by selecting the appropriate options, as shown in the image below:

However, the most recent SDK does not include an example that demonstrates VIT integration. You can still manually include the VIT library in your own projects:

The last SDK version that included a VIT example was SDK 2.14. To access it:
1. In the SDK Builder, filter examples by selecting maestro_record:

2. Choose the RT1064-EVK board and build the SDK.

This will provide you with the example project that includes VIT functionality.
So, does VIT support 'MultiTurn Voice command'?Which version of the SDK supports it?
Yes, according to the documentation you shared, VIT does support MultiTurn Voice Command. Please ensure that you are modifying the code correctly to enable this feature.
In SDK 2.14, you can find the relevant section for implementing MultiTurn Voice Command in the VIT_ExAPP.c file, specifically around line 571:

BR
Habib