ECoG to speech synthesis

In Nature today, another fascinating article from Eddie Chang's lab at UCSF. They were able to synthesize intelligible speech from ECoG recordings of cortical activity in sensory-motor and auditory areas. The system was even able to decode and synthesize speech successfully from silently mimed speech. The picture (Figure 1 in the article) shows a block diagram of the system.

There are also two commentaries on the work, along with some speech samples from the system.