[Retracted] Modeling and Simulation of English Speech Optimization Teaching Recognition Based on Intelligent Edge Detection Algorithm

Table 3

COSR results before and after FFPLMS feature set optimization.

Vocabulary	Characteristic parameters	0 dB	5 dB	10 dB	15 dB	20 dB	Average recognition rate
10 words	FFPSS_D	82.43	87.62	90.48	91.90	90.95	88.68
	PCA-features1	88.57	89.52	93.33	91.95	92.38	91.15
	FFPSS_D + TEOCC	82.86	90.95	92.38	94.29	94.29	90.95
	PCA-features2	90.52	90.48	93.33	94.81	94.81	92.79
20 words	FFPSS_D	74.86	80.67	84.71	86.22	87.71	82.83
	PCA-features1	78.10	82.86	86.90	89.29	91.43	85.72
	FFPSS_D + TEOCC	79.70	83.83	86.80	89.76	89.94	86.01
	PCA-features2	83.33	86.67	88.81	90.95	92.38	88.43