B - Box 是 谁 发 明の？

帮你查了下WIKI

History of beatboxing

Vocal imitation of percussion sounds has existed for a very long time. One tradition is thought to have originated in India several thousand years ago: the tradition of bol, and the Chinese developed Kouji, a type of vocal performing arts. These had little or no relation with hip hop, however, and have no direct connection to modern Eastern Hip Hop. Some African traditions use performers' bodies (clapping, stomping) to make musical sounds to maintain a steady musical pace. They made sounds using their mouths by loudly breathing in and out, which is done in beatboxing today.Beatboxing also take parts all over the globe.

大体上说是最早起源于几千年前的古印度
当然中国古代的口技也算一种B BOX
到了现代HIPHOP由于形式的多样化也无法考究是具体哪个人发明的
比较牛逼的达人有 Rahzel, Kenny Muhammad, and Matisyahu等等

补充：
你要觉得这个http://baike.baidu.com/view/838052.html靠谱就看这个