Stuck in fmod database

Hi, I’m using fmod core and here’s a problem, please help.

What I have done:

  1. Created a system object and several sound objects (one sound is one audio stream, one stream is one producer clip).
  2. Used fmod to change voices (add dsp audio effects).

What the problem is:
When I previewed the video clip, it was stuck. It was verified stucking in fmod database. There’s no PcmReadCallBack and AudioDSPCallback.

Are you getting any errors or warnings in your output log?