Procedure
The speech articulation test material consists of 25 disyllables that
are common in children’s daily lives. The target disyllable is written
on a card with a vivid picture, and the child was asked to name the
picture in the card alone or under guidance. Each of the disyllables was
repeated three times. The raters and children were seated on the
opposite side of each other around a table. They wrote down what they
heard and were also asked to mark every unintelligible word with a
cross. The speech intelligibility score was averaged across the four
raters and obtained by traditional evaluation is marked as
SISTE (Intelligibility Score of Traditional
Evaluation). At the same time, an iPhone equipped with iFly software
was placed 20 centimeters directly in front of the child in a quiet
environment. The speech recognition system recorded the pronunciation of
the child and then output the text. The speech intelligibility score of
the ASR system is marked as SISASR(Intelligibility
Score of ASR system ) and is based on the correctness of the
output text.