  When recognizing emotions from speech, we encounter two common problems: how
to optimally capture emotion-relevant information from the speech signal and
how to best quantify or categorize the noisy subjective emotion labels.
Self-supervised pre-trained representations can robustly capture information
from speech enabling state-of-the-art results in many downstream tasks
including emotion recognition. However, better ways of aggregating the
information across time need to be considered as the relevant emotion
information is likely to appear piecewise and not uniformly across the signal.
For the labels, we need to take into account that there is a substantial degree
of noise that comes from the subjective human annotations. In this paper, we
propose a novel approach to attentive pooling based on correlations between the
representations' coefficients combined with label smoothing, a method aiming to
reduce the confidence of the classifier on the training labels. We evaluate our
proposed approach on the benchmark dataset IEMOCAP, and demonstrate high
performance surpassing that in the literature. The code to reproduce the
results is available at github.com/skakouros/s3prl_attentive_correlation.

Audio and Speech Processing;Sound