| 摘要 |
PROBLEM TO BE SOLVED: To provide a diaphragm for a speaker, which is used in an acoustic equipment, and has a large degree of freedom in adjustment for characteristics and sound quality, and assures light weight and strength, as the speaker, and to provide the speaker using it, the electronic equipment and device using the speaker. SOLUTION: The rigidity of the diaphragm is improved by mixing and paper-making materials made by mixing natural fiber and carbonized bamboo material. According to the arrangement, improvement in sound quality of a speaker is attained using the diaphragm, and a paper making diaphragm gentle to earth environment is provided. COPYRIGHT: (C)2010,JPO&INPIT |
