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Benefits of knowing who, where, and when in multi-talker listening
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10.1121/1.3327507
/content/asa/journal/jasa/127/4/10.1121/1.3327507
http://aip.metastore.ingenta.com/content/asa/journal/jasa/127/4/10.1121/1.3327507
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The sequence of time slots that defined each trial of the experiments. Each sequence comprised 13 overlapping time slots (white rectangles). One or more phrases were allocated to each time slot. Each sequence contained one target phrase.

Image of FIG. 2.
FIG. 2.

Schematic illustration of the sequence of phrases from one trial of experiment 1. One phrase was placed in each slot. The target phrase appeared either in the center slot (white) or in one of the surrounding slots (light gray). Masker phrases were placed in the remaining 12 slots.

Image of FIG. 3.
FIG. 3.

Group mean (bars) and individual (symbols) SRTs for each condition in experiment 1. Error bars show 95% confidence intervals. Labels on the horizontal axes indicate between-subject standard deviations of SRTs (top) and the parameters of the target phrase, which were constrained in each condition (bottom).

Image of FIG. 4.
FIG. 4.

Schematic illustration of the sequence of phrases from one trial of experiment 2. Two phrases with simultaneous onsets were placed in each slot. Twelve of the 13 slots contained two masker phrases, one at at a level of 62.5 dB (A) and one at a level of 52.5 dB (A). The target phrase was allocated either to the center slot (white) or one of the surrounding slots (light gray), together with a masker phrase at 62.5 dB (A).

Image of FIG. 5.
FIG. 5.

Group mean (bars) and individual (symbols) SRTs for each condition in experiment 2. Error bars show 95% confidence intervals. Labels on the horizontal axes indicate between-subject standard deviations of SRTs (top) and the parameters of the target phrase which were constrained in each condition (bottom).

Image of FIG. 6.
FIG. 6.

Estimated mean benefits from constraining the who, where, and when parameters of the target phrase in experiments 1 (dark gray) and 2 (light gray). Error bars show 95% confidence intervals (, ).

Image of FIG. 7.
FIG. 7.

An expanded section (top) of the sequence of time slots (bottom) in experiment 3. The target phrase (gray) was paired with a masker phrase within a sequence of other masker phrases (white). The onset of the paired masker occurred 800 ms after the onset of the previous masker. The onset of the target phrase was varied so that it preceded or followed the onset of the time slot containing the paired masker by up to 320 ms.

Image of FIG. 8.
FIG. 8.

Group mean (solid line) and individual (symbols) SRTs for the range of target-masker onset asynchronies used in experiment 3. In the “alone” condition (bar) the masker was omitted, making it identical to the “None” condition of experiment 1 (Fig. 3). Error bars show 95% confidence intervals, and numbers above the upper horizontal axis are between-subject standard deviations of SRTs.

Image of FIG. 9.
FIG. 9.

An expanded section (top) of the sequence of time slots (bottom) in experiment 4. The target phrase (gray) was paired with a masker phrase within a sequence of other masker phrases (white). The onset of the target phrase occurred 800 ms after the onset of the previous masker. The onset of the paired masker phrase was varied so that it preceded or followed the onset of the time slot containing the target phrase by up to 640 ms.

Image of FIG. 10.
FIG. 10.

Group mean (solid line) and individual (symbols) SRTs for the range of target-masker onset asynchronies used in experiment 4. The dashed line shows mean performance across the asynchrony conditions from experiment 3. In the “alone” condition (bar) the masker was omitted, making the condition identical to the corresponding condition in experiment 3 and the “None” condition of experiment 1 (Fig. 3). Error bars show 95% confidence intervals, and numbers above the upper horizontal axis are between-subject standard deviations of SRTs.

Image of FIG. 11.
FIG. 11.

Group mean (bars) and individual (symbols) SRTs for simultaneous and non-simultaneous conditions. The three bars on the left correspond to the “None” condition in experiment 2 and the simultaneous conditions in experiments 3 and 4. The three bars on the right refer to the “None” condition in experiment 1 and the conditions in experiments 3 and 4, in which the paired masker was omitted. Error bars show 95% confidence intervals, and numbers above the upper horizontal axis are between-subject standard deviations of SRTs.

Image of FIG. 12.
FIG. 12.

A comparison of the levels of the target phrase at threshold (open symbols) and the masking energy (closed symbols) in each of four windows aligned at the start of key words in the target phrase. Data are shown for the “None” condition of experiments 1 (circles) and 2 (squares), and the asynchrony conditions of experiments 3 (triangles) and 4 (diamonds).

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/content/asa/journal/jasa/127/4/10.1121/1.3327507
2010-04-01
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Benefits of knowing who, where, and when in multi-talker listening
http://aip.metastore.ingenta.com/content/asa/journal/jasa/127/4/10.1121/1.3327507
10.1121/1.3327507
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