http://www.elar-archive.org/documenting/equipment/
http://www.hrelp.org/languages/resources/orel/tech.html
http://emeld.org/school/lingstart.html#1002
http://www.phon.ucl.ac.uk/resource/audio/recording.html
https://www.reddit.com/r/linguistics/comments/30xezu/suggestions_for_digital_audio_recorder_for/