Launch Countdown

So finally, we have been able to bring the full CitySounds Data Collector architecture online, and are now receiving encrypted audio data from our field test device, which is placed in a University private garden via our exernal WiFi AP mounted on the 5th floor of the Main Library.

The image above shows the 10-second audio samples (transferred via scp and separately encrypted with GnuPG) flowing through onto the CitySounds server from one of our Audio Capture Devices (ACDs). Never has a directory file listing looked so pretty!

Our Raspberry Pi based ACDs are also now fully time-synchronised through our local NTP server to ensure they work collectively and accurately to cover off each 60-second block of time. Once all six ACDs are deployed, they will each record a 10-second slice in sequence.

We are now on track to deploy to the trees in the Meadows in Edinburgh early next week: this will be a major accomplishment, especially given the additional extreme weather and strike issues we have been having to navigate the last couple of weeks.