Технология EarCommand позволит управлять электроникой с помощью беззвучных команд

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Технология EarCommand позволит управлять электроникой с помощью беззвучных команд

Огромное число гаджетов поддерживает управление при помощи голоса. Это довольно удобно, но у технологии есть недостатки: утрата конфиденциальности, проблемы с распознаванием произносимой команды в шумном месте, устройства часто ошибаются и не могут идентифицировать голоса владельцев. Группа ученых-энтузиастов из Нью-Йоркского университета в Буффало предложила собственную технологию беззвучного управления мобильной электроникой EarCommand.

Исследователи отталкивались от одного важного наблюдения. Дело в том, что при беззвучном произношении слов движения костей и мышц провоцируют деформацию слухового прохода. При этом модели деформаций можно сопоставить с конкретными словами. Устройство EarCommand по форме близко к наушнику, оно представляет собой миниатюрный динамик, обращенный внутрь. Он формирует и направляет в ушной канал волны, близкие к ультразвуку. Чувствительный микрофон фиксирует «эхо», отраженное от стенок канала. Затем сигнал анализируется компьютером.

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Технология уже прошла испытания. Ученые разработали 32 команды в виде отдельных слов и еще 25 в виде фраз. Качество распознавания оказалось удовлетворительным: число ошибок не превысило 10,2 и 12,3 %, соответственно. Эти показатели могут быть улучшены по мере совершенствования подхода. Экспериментальная система хорошо работает при высоком уровне шума и при использовании лицевых масок. Разработчики считают ее перспективной и продолжают исследования.

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