http://www.rowetel.com/wordpress/?page_id=452
Take a look at this too. Also runnable on low power devices. And there was some work of using AI to enhance the codec2 encoded bits too.
Take a look at this too. Also runnable on low power devices. And there was some work of using AI to enhance the codec2 encoded bits too.
http://www.rowetel.com/downloads/codec2/hts2a_1300.wav
Codec 2 does a better job of isolating the parts of sound which are most necessary to intelligible speech, without necessarily caring too much about preserving the original qualities of the speaker's voice or environment.
Fun fact: Codec 2 can be used to transmit voice over IRC:
The screen readers run at 2x normal speed (at least) and to my untrained ears the robotic noises just sound like a garbled mess instead of intelligible speech. The blind person using the phone, however, seems to have no problem understanding it. Fascinates me every time.