An English five words sentence “immersed” in background babble. The
babble is 6dB louder than the target speech (SNR = -6). Deciphering the
target speech is very difficult
The clean
target sentence without noise. Note that the sentence is meaningless
but the syntax is correct
Sentence
(1) after application of an SR transformation: Stochastic noise was
added and signals above threshold were shifted upwards and added to the
basic mix. Note that the target speech is more understandable. The
improvement is equivalent to about 3 dB
A
different sentence that underwent the exact same transformation as
sentence (3) yet its intelligibility is worse and the background babble
is more distinctive.alternate between (3) and (4) to hear the difference
The clean
target sentence from (4): underscores the role of cognitive intervention
(understanding the language) without which the babble is overwhelming.
This clearly explains why one cannot understand this sentence
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