作者: Jason Pregel , Adam Absher
DOI:
关键词: Seismology 、 Sound (geography) 、 Acoustics 、 Reflector (antenna) 、 Front (military) 、 Geology 、 Shield
摘要: An apparatus is disclosed for enhancing the sound level of portable devices by providing a reflector between device and case. The includes shield which functions to redirect output from rear facing speakers toward front. can be extended redirecting or retracted when not in use. A case incorporating retractable also disclosed.