The Neural-SRP Method for Universal Robust Multi-Source Tracking

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The Neural-SRP Method for Universal Robust Multi-Source Tracking

Eric Grinstein; Christopher M. Hicks; Toon van Waterschoot; Mike Brookes; Patrick A. Naylor

Neural networks have achieved state-of-the-art performance on the task of acoustic Direction-of-Arrival (DOA) estimation using microphone arrays. Neural models can be classified as end-to-end or hybrid, each class showing advantages and disadvantages. This work introduces Neural-SRP, an end-to-end neural network architecture for DOA estimation inspired by the classical Steered Response Power (SRP) method, which overcomes limitations of current neural models. We evaluate the architecture on multiple scenarios, namely, multi-source DOA tracking and single-source DOA tracking under the presence of directional and diffuse noise. The experiments demonstrate that our proposed method compares favourably in terms of computational and localization performance with established neural methods on various recorded and simulated benchmark datasets.

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