Borland c++ builder draw waveform

How can i display the pcm wavform by using BCB.

Just like "Gold Wave" and "CoolEdit".

I have tried to use Tchart and some other vcl components but they store data in memory.

So when displaying huge data, the system will run out of memory.

I don'n know how to do it in a better way.Please give some help.

thanks for any help you can give

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