A hearing aid, which analyzes the acoustic environment of the surroundings and automatically switches hearing assistance processing, restricts the directivity in a noisy outside area so as to reduce noise. However, restricting the directivity to the front when walking is extremely dangerous as the user will not recognize the approach of dangerous noises from behind. In addition to environment analysis, behavior analysis for identifying the walking state of a user will be necessary, however, typical walking detection schemes such as those used in pedometers use sensors and cannot be applied to devices like hearing aids which are fitted to the ears. To solve this problem, a hearing aid is disclosed which focuses on the generation pattern of wind noise generated when walking, and identifies, as a walking state, instances when the wind noise is repeatedly generated like a pulse, thereby allowing walking detection which uses existing configurations without requiring the mounting of a sensor or other device, and enabling worry-free use even when outside.
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