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Speaker pillow : ウィキペディア英語版 | Speaker pillow
A speaker pillow is a pillow that incorporates loudspeakers. It is generally designed to be an alternative to headphones connected to portable media players. Research has shown that a speaker pillow may also help with the symptoms of tinnitus by masking the internal sound with an external one. See also Tinnitus masker.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Speaker pillow」の詳細全文を読む
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