| 摘要 |
PROBLEM TO BE SOLVED: To provide a mixer loaded with a howling prevention device so that sound quality of a line signal remains unchanged by providing the howling prevention device where a second bus is connected to an input side and a first bus is connected to an output side. SOLUTION: In a howling prevention device 22, a howling bus 20 is connected to the input side while the output signal of the howling prevention device 22 is mixed by a master bus 10. When a changeover switch 1 is changed over to a contact point A, a changeover switch 2 is changed over to a contact point B and a changeover switch N is changed over to the contact point A, a line signal inputted to an input terminal 1 passes through a channel fader 1, and is sent to the master bus 10 through the changeover switch 1, then outputted to an adder 12 from the master bus 10. Since the line signal inputted to the input terminal 1 does not pass through the howling prevention device 22, sound quality of the line signal inputted to the input terminal 1 is prevented from changing by the howling prevention device 22. |
