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iam doing a project on speech encryption.. the thing is that i am stuck somewhere.. i need help on how to alter the frequency of a recorded sound using java.. changing its amplitude can also help.. I am REALLY STUCK HERE... please help me out :|.....
Updated 4-Feb-14 14:52pm
Matt T Heffron 4-Feb-14 20:55pm    
What have you tried?

Read this and explore for yourself: Java Sound API Tutorials[^]
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Seems like you are trying to do speech inversion.[^]

If so, the wiki article covers it well enough. Mix (multiply) the wave file samples with a set of sine wave samples (that vary from +1.0 to -1.0) and filter the result. Filtering is a topic all its own.
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