Identification of Weakly Pitch-Shifted Voice Based on Convolutional Neural Network

Figure 5

Visualization of different feature maps by t-SNE. (a) The first derivative of LFCC. (b) Output feature map of first Conv group in CNN. (b) Output feature map of second Conv group in CNN. (c) Output feature map of last Conv group in CNN.

(a)

(b)

(c)

(d)