Source Repetition Stimuli Examples - Figure 3a

These pages contains example stimuli from the paper "Recovering Sound Sources From Embedded Repetition" by McDermott, Wrobleski, and Oxenham (2011, PNAS). Headphones are recommended. Quicktime must be installed for the sounds to play.

**Please note - sound files make take a few seconds to load. If not all sounds load, please try refreshing the page.

Figure 3a (Experiment 3a)


Fig. 3a

Figure 3a. Stimuli and results of Experiment 3a. Effect of mixture variability persists with asynchronous and alternating presentation. Conditions 3 and 4 differ in the pairing of the target with variable (cond. 3) or repeated (cond. 4) distractors. As elsewhere, the red line segments represent the target sound.

Experiment 3a stimulus examples

There are two examples of each condition. In all cases the probe is the target sound. When the distractors that co-occur with the target vary (Conditions 1 and 3), the probe ought to sound like what you hear repeating across mixtures. In Condition 5, the probe generally sounds a bit different from what you think the target is.

Condition 1:
Condition 2:

In the following three conditions, the target occurs on every other distractor.

Condition 3:
Condition 4:
Condition 5:

**Note that there are only six presentations of the target, instead of the ten used in the experiments. The effect is readily heard with fewer presentations, and this makes the sound files load faster.**


Stimuli from Figure 1a-h     Stimuli from Figure 1i     Stimuli from Figure 2a     Stimuli from Figure 2b   

Stimuli from Figure 3b    Stimuli from Figure 4     Stimuli from Figure S3a     Stimuli from Figure S3b


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