Audio programming and tone synthesis

Question

I am mostly a business programmer and I've not done anything in audio programming since the ZX Spectrum so I'm not sure how to even ask this question correctly.

I just need some pointers in the right direction with regards to writing (Android in this case, but it is really a general question) applications which deal with audio such as a Tone Matrix.

Are they based on generating lots of samples or are the tones generated on the fly?

Thanks

Answer 1

Any mixture of both.

Interesting audio-related DSP discussions happen on the forums at http://www.kvraudio.com.

Answer 2

how can i send audio signal upto 1km and how to generate it?

Answer 3

See the answer here: http://stackoverflow.com/questions/2413426/playing-an-arbitrary-tone-with-android