| 摘要 |
PURPOSE:To effectively generate various acoustic space by providing first and second tone variable means which unrelatedly change the frequency characteristics of input audio signals and output them, and generating front/rear effective sound signals in correspondence with the output audio signals of the second tone variable means. CONSTITUTION:The selection of sound switches 13 and 14 is on a sound off-side to which effective sound is not added, a tone adjustment circuit 11 adjusts a front tone and a tone adjustment circuit 12 adjusts a rear tone. When it is a sound on-side to which effective sound is added, the tone adjustment circuit 11 adjusts a main tone and the tone adjustment circuit 12 adjusts an effect (effective sound) tone. In the case of sound-on, the tone adjustment circuit 11 firstly adjusts rough tone balance and the tone adjustment circuit 12 changes the frequency characteristic between direct sound and effective sound so as to adjust sound effect. |
