<div>Hi,</div>
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<div>I am going through the algorithm used in the speex echo cancellation and speex preprocessing. I could find algorithm used from the soucre code file header. I wanted to know wheater these documents which are mentioned in the files are patent algorithm or public algorithms. </div>
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<div>Thanks In advance.</div>
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<div>Regards,</div>
<div>Neelufar.</div>