This project covers prototypes for dry electrode based sensing systems or bone conduction. The contractor will work on prototyping one or both of these systems depending on the availability of parts and the immediate needs.
Bone conductors act like traditional speakers, except rather than vibrate the air to transmit sound to the ear, bone conductors translate vibration to the ear by vibrating the users skull. As a result of their vibrating the skull, bone conductors can provide an audio interface that can only be heard by a single user.
Electric potential sensing electrodes can be used for a variety of purposes including EMG, EEG, EOG. Though the sensing circuit is similar the signal for each purpose is filtered differently.
This work will be creating several head worn sensing systems or bone conductors acoustic displays in order to explore their use in future head mounted displays.
The proposed work will, in abstract, create several functional electrode-based sensing devices or acoustic displays using bone conduction. Initial work (month 1) will focus on creating head worn prototypes to demonstrate the achievable signal quality from different actuator or electrode types and placements.
If the results from this initial work are promising the second round of the work (month 2) will be creating one or more prototypes for further testing actuator type and placement. The goal will be prototype(s) that develop a clear view of what the potential for bone conduction is for a wearable headset.
Should the first two stages prove promising enough, the final stage (month 3) of the contract will be developing a polished prototype (either bone conduction display or electrode sensing system) suitable for running more formal user studies and experiments.