| 摘要 |
PURPOSE:To transmit musical signals with high fidelity by compensating the variation of dynamic distribution capacity due to vibration of a transmission line which is used for reproduction of sound signals recorded with high fidelity. CONSTITUTION:A center conductor 3 is set at the center of an insulating material 2 having a circular section on a transmission line 1, and the 1st and 2nd cylindrical conductors 4 and 5 are distributed concentrically by interposing the material 2 so as to surround the conductor 3. The distance d1 between the conductor 4 and the conductor 3 and the distance d2 between the conductors 4 and 5 are set to secure an equal electrostatic distribution capacity among those conductors. The conductor 4 is connected to the output terminal of an amplifying stage 6 in the form of a signal conductor, and the conductors 3 and 5 are grounded. Thus the conductor 4 has mechanical vibrations, and the electrostatic distribution capacity between the 1st and 2nd conductors is reduced and kept constant as a whole despite an increment of the electrostatic distribution capacity between the conductors 4 and 3 due to the mechanical vibration of the conductor 4. This method prevents effectively the deterioration of transmission characteristics due to the variation of the dynamic electrostatic distribution capacity. |
