| 摘要 |
PURPOSE:To prevent poverty of blood caused at sound production, by providing an oxygen flowing-out hole at the grip of a microphone. CONSTITUTION:A microphone 1 is provided with an oxygen blowing-out hole 3. The oxygen is jetted from the blowing-out hole 3 via an oxygen bomb 10, hose 8, flow regulator 7 and oxygen tube 4. Thus, oxygen can be obtained during the speaking with the microphone, then the poverty of blood is avoided. |
