Abstract
Responses obtained in consonant percepBon experiments
typically show a large variability across sBmuli of the same
phoneBc idenBty (Phatak at al., 2008; Sing & Allen, 2012;
Toscano & Allen, 2014).
The present study invesBgated the influence of different
potenBal sources of this response variability. It was
disBnguished between source-induced variability, referring to
perceptual differences caused by acousBcal differences in the
speech tokens and/or the masking noise tokens, and receiverrelated
variability, referring to perceptual differences caused
by within- and across-listener uncertainty. It can be
demonstrated that any physical change in the sBmuli had a
measurable effect. This holds even for slight Bme-shics in the
steady-state masking-noise waveform. Furthermore,
responses obtained with idenBcal sBmuli differed substanBally
across different normal-hearing listeners, while individual
listeners were able to reproduce their responses fairly reliably.
To determine how well the source-induced variability is
reflec te d i n diffe re n t a u di to ry -i n s pi re d i n te r nal
representaBons (IRs), the corresponding perceptual distances
were compared to the distances between the IRs of the
sBmuli. Several variants of an energy-based IR and a
modulaBon-based IR were considered. The results suggest
that a normalized modulaBon-based representaBon provides
the best match to the perceptual data.
Original language | English |
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Publication date | 2015 |
Number of pages | 1 |
Publication status | Published - 2015 |
Event | 169th Meeting of the Acoustical Society of America - Wyndham Grand Pittsburgh Downtown Hotel, Pittsburgh, United States Duration: 18 May 2015 → 22 May 2015 Conference number: 169 |
Conference
Conference | 169th Meeting of the Acoustical Society of America |
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Number | 169 |
Location | Wyndham Grand Pittsburgh Downtown Hotel |
Country/Territory | United States |
City | Pittsburgh |
Period | 18/05/2015 → 22/05/2015 |