audio recorders

[Barbara L Davis]

Fred, Brian et al.-
   We have collected large samples of infant babbling and early word data
since 1992. We used an ATW digital audio recorder (DAT) for both data
collection and transcription. Lately we have had good luck with Sony
portable DAT's as well. In our studies, infants wore an Audiotecknika ATW
1031 remote microphone clipped to the collar of their clothing so as to
maintain a relatively constant mouth to microphone distance (with care to
avoid having the microphone brush against clothing). In addition, it was
necessary to exercise care to keep it out of range of the infant's hands if
possible in order to avoid having them chew on the microphone. We have had
good fidelity for both perceptual and instrumental analysis with this
set-up.
    In our most recent project with Korean-learning infants, we have used a
Sony minidisc recorder (MZ-R55) with an Aiwa microphone. A Sony Mini-disc
Deck (MDS-JE330) is being used for transcription.
    In our studies, no structure is imposed on the normal household routine.
The parents are told to follow the normal types of activities they usual
pursue with
their infants. The observer/data collector is always present and interacts
informally with the parent or caregiver. In addition, family members or
guests are occasionally present. An attempt is made to keep extraneous
noise low (i.e TV sets, dishwashers,  music) without interfering with the
family routines. The infants go about their normal eating and playing
routines wearing the remote mike. It works fine as long as they stay inside
the house, but not so well outside.
    Hope this is helpful.

Babs Davis

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