Here is are instructions and code for a free version: http://grathio.com/2011/08/meet-the-tacit-project-its-sonar-for-the-blind/ http://grathio.com/2011/08/mee

Here is are instructions and code for a free version: http://grathio.com/2011/08/meet-the-tacit-project-its-sonar-for-the-blind/ http://grathio.com/2011/08/meet-the-tacit-project-its-sonar-...