Challenges and opportunities in multi-device speech processing

We review current solutions and technical challenges for automatic speech recognition, keyword spotting, device arbitration, speech enhancement, and source localization in multi-device home environments to provide context for the INTERSPEECH 2022 special session, “Challenges and opportunities for signal processing and machine learning for multiple smart devices”. We also identify the datasets needed to support these research areas. Based on the review and our research experience in the multi-device domain, we conclude with an outlook on the future evolution of multiple device signal processing and machine learning.