I have thought occasionally about wayfinding applications of surround sound presented over headphones – using a bunch of filters (called Head Related Transfer Functions) to replicate the experience of 3D sound but using only a stereo signal over headphones. As you may know using HRTF you can get very good surround sound – it’s used by games such as Papa Sangre – but can be made more accurate and effective with customised filters for an individual person.
The RNIB see benefit in looking at audio related wayfinding apps for mobile phones with GPS and wanted to know what I could do for them so I started thinking about how sighted people find their way round a strange place.
Then I thought about hardware to make it happen. It would need Read the rest of this entry ?