A Glimpse into Different Aspects of Phonemic Restoration

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Introduction

One of the best-known and interesting findings in speech perception research is the “phonemic restoration phenomenon”. It is a beneficial and amazingly utilized human ability by which, “under certain conditions, sounds actually missing from a speech signal can be synthesized by the brain and clearly heard”(Kashino, 2006. P.318). This shows the brains sophisticated ability in comprehending speech in the everyday life noisy settings.

This paper explores - with illustrative demonstrations - four queries concerning different aspects of phonemic restoration:

1. Is phonemic restoration a conscious act? Are there any conditions for its activation?

2. What exactly takes place during the process of phonemic restoration? How is it best modeled?

3. Would visual/ auditory integration of a stimulus enhance phonemic restoration?

4. Does hearing impairment affect phonemic restoration?

Basic Phenomenon

The phonemic restoration phenomenon was first demonstrated by Warren (1970). He conducted an experiment on a number of listeners where he got them to listen to the sentence, “The state governors met with their respective legislatures convening in the capital city”. However, in the word “legislatures” a cough completely masked the medial “s”. Listeners stated hearing the masked phoneme. This showed that when phonemic restoration occurred, listeners were not able to identify the masking sound position in the sentence. What they received was unconsciously interpreted. In other words, the efficiency of phonemic restoration reached the extent that the listeners did not notice it. (Kashino, 2006). Amazingly, the phonemic restoration effect was not observed when “s” was masked with silence!

Bregman (1990) ex...

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