Figure 4From: Noise-robust speech feature processing with empirical mode decompositionThe scatter plot of word accuracy before and after EMD process. The x-axis is the word accuracy rate before the proposed EMD processing and the y-axis is the word accuracy rate after the EMD processing. A point in the plot corresponds to a test data subset in the Aurora 2.0 corpus, and there are 70 points. The line is x = y, so we can see that the EMD processing technique improves the recognition accuracy.Back to article page