Deep neural networks with batch speaker normalization for intoxicated speech detection
Alcohol intoxication can affect people both physically and psychologically, and one's speech will also become different. However, detecting the intoxicated state from the speech is a challenging task. In this paper, we first implement the baseline model with ComParE feature and then explore the influence of the speaker information on the intoxication detection task. Besides, we apply a ResNet18 based model to this task. The model contains three parts: a representation learning subnetwork with Deep Residual Neural Network(ResNet) of 18-layer, a global average pooling(GAP) layer and a classifier of 2 fully connected layers. Since we cannot perform speaker z-normalization on the variant-length feature input, we employ the batch z-normalization to train the proposed model. It also achieves similar improvement like applying the speaker normalization to the baseline method. Experimental results show that speaker normalization on baseline model and batch z-normalization on ResNet18 based model provides 4.9% and 3.8% improvement respectively. The results show that speaker normalization can improve the performance of both the baseline model and the proposed model.
