D3DXCreateKeyframedAnimationSet函数参数有关问题

D3DXCreateKeyframedAnimationSet函数参数问题。
C/C++ code

HRESULT  D3DXCreateKeyframedAnimationSet(
  __in   LPCSTR pName,
  __in   DOUBLE TicksPerSecond,
  __in   D3DXPLAYBACK_TYPE Playback,
  __in   UINT NumAnimations,
  __in   UINT NumCallbackKeys,
  __in   const LPD3DXKEY_CALLBACK *pCallKeys,
  __out  LPD3DXKEYFRAMEDANIMATIONSET *ppAnimationSet
);




TicksPerSecond这个是什么意思??

------解决方案--------------------
TicksPerSecond 一秒钟播放多少个关键帧