A signal processor audio for performing a signal processing on a first audio signal and a second audio signal in correspondence with an operation to produce an output, comprising: a movable operating device (23, 43) operatively between one and other ends, one end associated with said first audio signal and said other end being associated with said second audio signal being said; a signal processing device (29) for effecting a signal processing on any one of said first audio signal and said second audio signal to provide at least one kind of predetermined effect; and a control device (31) for controlling said device signal processing (29) so that the effect for any one of said first audio signal and said second audio signal at a predetermined timing based is provided a position of said operation device (23, 43) and in a moving direction thereof characterized in that: the first audio signal relates to a first music number; and the second audio signal relates to a second music number which differs from the first music number, and wherein a first reference position is set in the vicinity of said one end for said operation device (23, 43), and a second reference position in the vicinity of said other end for said operation device (23, 43) is established, and this effect for any of said first audio signal and said second audio signal occurs when said device operation (23, 43) is located between said first reference position and said second reference position.
展开▼
