| 摘要 |
<p>PURPOSE:To correct automatically the audible sense, by incorporating a graphic equalizer in a preamplifier and adjusting an equalizer in response to a level of a variable resistor. CONSTITUTION:A signal inputted from a preamplifier input device 4 is inputted to a selector 5 for attaining the selection of inputs. This signal is supplied to a graphic equalizer 6 via a variable resistor 1. A level detector 7 detects an output level of the variable resistor, accesses a storage device in which audible sense correcting data is stored and data corresponding to an output level is extracted from the device 9. The data are inputted to a variable resistor selecting controller 10 to select the variable resistor of the graphic equalizer 6.</p> |
