A power generating system is disclosed. A tube including a plurality of openings directs sound into a microphone located on the auditory prosthesis. A second optional wire or wireless communication can be incorporated that can be monitored by civil, commercial, governmental or municipal operators or agencies, using a remote display andor recorder or by a secure wire or wireless communication network. The second semiconductor layer is disposed on the emitting layer and forms a ridge mesa. In manufacturing, a rolled steel material is subjected to wire drawing and patenting under prescribed conditions, wherein the sound quality realized by the steel wire installed in a stringed musical instrument can be noticeably improved by adopting both chemical composition control and total decarburized layer depth control. A substantially clear heat reflector extends partially around the fluorescent lamp and, with the heater, substantially encloses circumferentially the fluorescent lamp at the high voltage end lamp socket.