Filter effect imparting device, electronic musical instrument, and control method for electronic musical instrument
AssigneeCasio Computer Co., Ltd.
InventorMasuo YOKOTA
Life of this patent
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Abstract
A filter effect imparting device includes a characteristic-variable filter that has a variable filter characteristic corresponding to a coefficient group composed of a plurality of filter coefficients, and a control circuit that changes the coefficient group from a first coefficient group that is set as a start point to a second coefficient group that is set as an end point. The control circuit retains the coefficient group during the change and, in newly setting a third coefficient group as the end point, the control circuit sets the retained coefficient group as the start point.
Claims14
A filter effect imparting device comprising:
- a characteristic-variable filter that has a variable filter characteristic corresponding to a coefficient group composed of a plurality of filter coefficients;
- and
- a control circuit that changes the coefficient group from a first coefficient group that is set as a start point to a second coefficient group that is set as an end point,
- wherein the control circuit retains the coefficient group during the change and, in newly setting a third coefficient group as the end point, the control circuit sets the retained coefficient group as the start point.
An electronic musical instrument comprising:
- a performance operation receiver with which a user performs a performance operation;
- a musical sound generator that generates a musical sound corresponding to the performance operation on the performance operation receiver;
- a characteristic-variable filter that has a variable filter characteristic corresponding to a coefficient group composed of a plurality of filter coefficients;
- a control circuit that changes the coefficient group from a first coefficient group that is set as a start point to a second coefficient group that is set as an end point;
- and
- an effect imparter that performs, using the characteristic-variable filter, filtering on the musical sound generated by the musical sound generator,
- wherein the control circuit retains the coefficient group during the change and, in newly setting a third coefficient group as the end point, the control circuit sets the retained coefficient group as the start point.
A control method for an electric musical instrument that includes:
- a performance operation receiver with which a user performs a performance operation;
- a musical sound generator that generates a musical sound corresponding to the performance operation on the performance operation receiver;
- and a characteristic-variable filter that has a variable filter characteristic corresponding to a coefficient group composed of a plurality of filter coefficients, the method comprising causing the electronic musical instrument to perform:
- controlling that is changing the coefficient group from a first coefficient group that is set as a start point to a second coefficient group that is set as an end point;
- and
- effect imparting that is performing, using the characteristic-variable filter, filtering on the musical sound generated by the musical sound generator,
- wherein the controlling retains the coefficient group during the change and, in newly setting a third coefficient group as the end point, sets the retained coefficient group as the start point.
Dependencies are inferred from the claim text.