ORCID
- Ruairí De Fréin: 0000-0002-3912-1470
Abstract
Precise relative delay estimation is important for speech demixing in Assisted Living (AL) scenarios, where large inter-microphone spacing can introduce phase-wraparound ambiguity. This survey comprehensively examines state-of-the-art methods for relative delay estimation and TF masking, focusing on methods that leverage relative delays to compute accurate speech demixing masks. These methods demonstrate that TF masks can be robustly developed using estimates of spatial, spectral, and auditory features. This paper provides a critical analysis of relative delay estimation and speech demixing techniques in AL environments. By examining existing methods, we aim to contribute to the development of effective and robust solutions for speech separation in challenging AL listening conditions. The findings of this survey highlight the importance of considering phase-wraparound and the potential benefits of incorporating auditory features into TF masking algorithms. It also considers the concept of the Internet-of-Auditory-Things (IoAudiT) as a promising future technology for AL and a framework for future research. This work offers valuable insights for researchers and practitioners in the fields of speech processing, audio signal processing, and assistive technology. The findings and recommendations presented in this survey will contribute to the advancement of speech demixing techniques and their application in real-world AL scenarios.
Keywords
Assisted living, deep learning (DL), hearing aid (HA), inter-aural intensity differences (IIDs), inter-aural time differences (ITDs), machine learning (ML), source separation (SS), spatial covariance matrix (SCM), steered-response power (SRP)
DOI Link
Publication Date
2025-01-01
Publication Title
IEEE Access
Volume
13
First Page
193626
Last Page
193666
Deposit Date
2026-11-05
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Additional Links
Recommended Citation
Bagchi, S., & De Fréin, R. (2025) 'Large Relative Delay Estimates for Speech Demixing in Assisted Living Environments: A Survey', IEEE Access, 13, pp. 193626-193666. Available at: 10.1109/ACCESS.2025.3629375