Patent ID: 6301365
Filing Date: 2001-10-09
Classification: G11B,H04H

Abstract:
An apparatus comprising:first audio signal producing means for producing a first audio signal;second audio signal producing means for producing a second audio signal;a single operating member movable between a first end and a second end;level adjusting means for progressively decreasing the level of said first audio signal as said operating member is positioned closer to said second end and for progressively decreasing the level of said second audio signal as said operating member is positioned closer to said first end;means for adding said first and second audio signals which have their levels adjusted by said level adjusting means;means for detecting the position of said operating member; andcontrol means for controlling said first and second audio signal producing means, said control means stopping a producing operation of said second audio signal by said second audio signal producing means when said operating member is positioned at said first end and stopping the producing operation of said first audio signal by said first audio signal producing means when said operating member is positioned at said second end, said control means also restarting the producing operation of each of said first and second audio signal producing means when said operating member is moved from said second end and when said operating member is moved from said first end, respectively.