Parameter controller and method for controlling parameter

A method of controlling a parameter used by a tone generator unit to generate an audio signal, the method comprising the steps of:

• setting, according to an operation of one increase and decrease control or one combination of an increase control and a decrease control, a type of effect to be given to the audio signal and a degree of effect of the type to be given to the audio signal;
• and
• changing the type of effect to be given to the audio signal when an operation to further decrease the degree of effect to be given to the audio signal to less than zero is detected,
• wherein while a first type is set as the type of the effect to be given to the audio signal, the setting step increases the degree of effect to be given according to an increasing operation on the one increase and decrease control or the one combination of the increase control and the decrease control, and decreases the degree of effect to be given according to a decreasing operation on the one increase and decrease control or the one combination of the increase control and the decrease control, and the changing step changes the type of effect to be given to the audio signal to a second type when a decreasing operation to further decrease the degree of effect to less than zero is detected, and
• wherein while the second type is set as the type of effect to be given to the audio signal, the setting step increases the degree of effect to be given according to a decreasing operation on the one increase and decrease control or the one combination of the increase control and the decrease control, and decreases the degree of effect to be given according to an increasing operation on the one increase and decrease control or the one combination of the increase control and the decrease control, and the changing step changes the type of effect to be given to the audio signal to the first type when an increasing operation to further decrease the degree of effect to less than zero is detected.

A parameter controller configured to control a parameter used by a tone generator unit to generate an audio signal, the parameter controller comprising:

• a controller configured to set, according to an operation of one increase and decrease control or one combination of an increase control and a decrease control, a type of effect to be given to the audio signal and a degree of effect of the type to be given to the audio signal,
• wherein the controller is configured to change, when the controller detects an operation to further decrease the degree of effect to be given to the audio signal to less than zero, the type of effect to be given to the audio signal,
• wherein while a first type is set as the type of effect to be given to the audio signal, the controller increases the degree of effect to be given according to an increasing operation on the one increase and decrease control or the one combination of the increase control and the decrease control, and decreases the degree of effect to be given according to a decreasing operation on the one increase and decrease control or the one combination of the increase control and the decrease control, and when a decreasing operation to further decrease the degree of effect to less than zero is detected, changes the type of effect to be given to the audio signal to a second type, and
• wherein while the second type is set as the type of effect to be given to the audio signal, the controller increases the degree of effect to be given according to a decreasing operation on the one increase and decrease control or the one combination of the increase control and the decrease control, decreases the degree of effect to be given according to an increasing operation on the one increase and decrease control or the one combination of the increase control and the decrease control, and when an increasing operation to further decrease the degree of effect to less than zero is detected, changes the type of effect to be given to the audio signal to the first type.

A method of controlling a parameter used by a tone generator unit to generate an audio signal, the method comprising the steps of:

• providing a manual control device;
• setting, according to an operation of the manual control device of one increase and decrease control or one combination of an increase control and a decrease control, a first effect or a second effect that is different from the first effect, and a degree of effect thereof to be given to the audio signal depending on a position of the manual control device;
• and
• changing, when the controller detects an operation of the manual control device to further decrease the degree of effect of the first effect to be given to the audio signal to less than zero, from the first effect to the second effect to be given to the audio signal.