Notes concerning “Audio”

• Brute force speech 02021-03-21 (updated 02021-03-22) (7 minutes)
• Phased-array imaging sonar from a mesh network of self-localizing sensor nodes 02021-04-27 (updated 02021-12-30) (8 minutes)
• The spark-pen pointing device 02021-10-10 (updated 02021-10-12) (1 minute)