30Apr 2022
Sound Source Selection Based on Head Movements in Natural Group Conversation

Sound Source Selection Based on Head Movements in Natural Group Conversation

To optimally improve the signal-to-noise ratio in noisy environments, a hearing assistance device must correctly identify what is signal and what is noise. Previous orientation studies have demonstrated that head angle is systematically related to listening target; the present study aimed to examine whether this relationship is sufficiently reliable to be used in group conversations where participants may be seated in different layouts and the listener is free to turn their body as well as their head. Provided the location of all target talkers is known, the HMM source selection model implemented here, however, showed significantly lower error in identifying listeners’ auditory attention than the linear head-steering method.

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