RETRACTED: English Speech Recognition and Evaluation of Pronunciation Quality Using Deep Learning

Table 1

Artificial evaluation grade and evaluation standard.

Level	Intonation	The speed	Rhythm	Tone of voice	As a whole
A	Accurate content, clear and fluent pronunciation, no mispronunciation	The speed is moderate	Precise accent, strong sense of rhythm	The tone is natural and precise	The overall pronunciation is excellent
B	The content is relatively complete, and the pronunciation is fluent and clear, without serious pronunciation mistakes	The speed faster	Accurate accent and good sense of rhythm	Intonation is relatively natural and accurate	Overall good pronunciation
C	The content is generally complete, and the pronunciation is basically fluent and clear, without interfering pronunciation	Speak too fast	The accent is common and has a sense of rhythm	The intonation is roughly accurate and unnatural	General pronunciation
D	The content is generally complete, and the pronunciation is basically fluent and clear, without interfering pronunciation	Speed super-fast	There is wrong accent pronunciation, less or more accent, no sense of rhythm	The intonation is unnatural and inaccurate	Poor overall pronunciation