You’ve worked a lot with animals as a sound engineer, could you give a brief history of how your initial interest in audio restoration of bird sounds has led to being the recordist for the Colombian Mountain Grackle in the mountains of Colombia?
My interest on animal sounds started when I worked on my audio engineering undergrad thesis. I paired up with a biologist that was building an animal sound archive at the Humboldt Institute in Colombia and he needed the technical help of an audio engineer to help him develop the archive. One of the objectives of this collaboration was to produce the first CD of Colombian bird sounds using the material he recorded in different locations around the country. It was a challenging project since at the time there were no local audio engineers working in this area. They were working in either music, live sound or audio post-production and all the tools available for sound restoration were focused on those applications. I tested out filters from different software including ProTools, Audiosculpt, Canary and Matlab. After a year of research, I ended up programming filters on Matlab and applying them to each recording, based on the information from their frequency content. I found, among other things, that audio restoration for animal sounds is very subjective; sometimes removing too much “noise” from a recording makes it sound out of context and it’s not pleasant to listen to. I came up to this conclusion after doing a survey to people from different backgrounds (musicians, biologists and the general public). They listened to the same recording filtered in different ways and chose the one that was more appealing to them.Read More