Inter-formant Intelligibility Dips for Narrowband Speech
Supported by an EPSRC ROPA
Recent speech perception studies have
demonstrated high intelligibility of narrow bands of speech (e.g. ).
While intelligibility is highest in the F2 region, closer inspection reveals
intelligibility dips in the region between typical F1 and F2 locations.
Experiments conducted in Sheffield have also shown such a dip in intelligibility
. Furthermore, a computation model employing missing data techniques
has also demonstrated such behaviour.
This study aims to investigate these findings
via listening experiments with sentence material. In particular, we plan
to investigate how, if at all, the location of these dips is related to
the fundamental frequency of the speaker. Also we intended to identify
whether dips between F2 and F3, as predicted by the computational model,
occur in listeners' results.
 Warren, R.M., Riener, K.R., Bashford, J.A, and Brubaler, B.S. (1995) Spectral redundancy: Intelligbility of sentences heard through narrow spectral slits, Percept. Psychophys., 57, 175-182