Impact of Sound Duration and Inactive Frames on Sound Event Detection Performance
Abstract
In many methods of sound event detection (SED), a segmented time frame is regarded as one data sample to model training. The durations of sound events greatly depend on the sound event class, e.g., the sound event "fan" has a long duration, whereas the sound event "mouse clicking" is instantaneous. Thus, the difference in the duration between sound event classes results in a serious data imbalance in SED. Moreover, most sound events tend to occur occasionally; therefore, there are many more inactive time frames of sound events than active frames. This also causes a severe data imbalance between active and inactive frames. In this paper, we investigate the impact of sound duration and inactive frames on SED performance by introducing four loss functions, such as simple reweighting loss, inverse frequency loss, asymmetric focal loss, and focal batch Tversky loss. Then, we provide insights into how we tackle this imbalance problem.
Cite
@article{arxiv.2102.01927,
title = {Impact of Sound Duration and Inactive Frames on Sound Event Detection Performance},
author = {Keisuke Imoto and Sakiko Mishima and Yumi Arai and Reishi Kondo},
journal= {arXiv preprint arXiv:2102.01927},
year = {2021}
}
Comments
Accepted to ICASSP 2021. arXiv admin note: text overlap with arXiv:2006.15253