Friday, September 16, 2011

Room Recorder


I have been editing Mirjam's research. She needed to do a lot of interviews, with missionaries who had returned from the field. Before she got started, we tested the recording equipment. This needed to be portable, technically up to the task, quickly deployed -- and something that interviewees felt entirely comfortable with. Eventually I designed an omnidirectional microphone with preamplifier (pictured) which plugged into a recorder, and picked up every whisper in a room. One placed it on some surface, and it was "out of mind" for the duration of the interview. The only time it got trounced was during an outdoor interview where an aeroplane flew overhead. OBSERVATION: Note that this design, although it is pretty standard, is copyright. I have permission from the publisher to display it. Similar devices are available commercially, yet without the preamplifier -- e.g. the Sony AECMF8 or the Audio-Technica ATR-4697.

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