How to make raw audio sample to QTMovie?

Hi,all.
I'm a newer to QTKit.Now i want to add some series of raw audio samples to my QTMovie.The raw audio samples contain some propertys about the audio.such as sampleRate,channelPerframe and so on .
According to search the interent,I found to use the propertys to fill with the "AudioStreamBasicDescription" struct.then,use the api of "QTSoundDescriptionCreate" to get the SoundDescriptionHandle.At last use "AddMediaSample".Only this ,I didnt find any useful sample code.So could anyone give me some useful information about it ?
Thanks in advance for every reply.

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