I need to generate a tone with a gradually increasing pitch with a very slow ratio. That is, I need a sine/square/sawtooth tone (amplitude doesn't matter) starting from 20Hz and gradually, linearly (or exponentially) increasing to 16kHz over 10 minute period. I need it to test a very specific audio device.
This seems like a simple task, yet I cannot find any free tool which would generate such a tone and save it to WAV or something like that. I tried fiddling with Audacity, but either I cannot find it or such tone not possible to achieve in it.
Does anybody know any free tool which would help me in generating such tone?