sound file

I have a big problem.the problem is i have to read a sound file as an input of a function whic function takes parameters
like: int dosth(int d ,int x);

now i want to read sound file int d and int x than apply function to obtain another file.

i think it is 500 point question.
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could you give more information please or some code you have already done?
Speaker independent recognition? Load a vocabulary of numbers... etc? If this is a telephony application, you'll find a number of hardware vendors for this, like Aculab or Dialogic.

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dervisakyuzAuthor Commented:
this is a project about echo cancellation in internet telephony(voip).

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