Filter characteristics changing device
AssigneeCasio Computer Co., Ltd.
InventorsHiroki Sato, Masuo Yokota
Life of this patent
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Abstract
When an instruction is provided for changing a characteristic of a set filter which includes a plurality of partial filters and forms a specified characteristic by combining a plurality of partial filters, a processor performs, as crossfading processing for a first filter and a second filter among the plurality of partial filters, fade-out processing of gradually decreasing a degree of contribution of the first filter to the characteristic and fade-in processing of gradually increasing a degree of contribution of the second filter to the characteristic. As a result, unnaturalness occurring at the time of changing filter characteristics is solved.
Claims11
A filter characteristics changing device comprising:
- a set of filters which includes a plurality of partial filters and which forms a characteristic by combining at least two filters selected from among the plurality of partial filters;
- and
- a processor which performs, as crossfading processing for a first filter and a second filter selected from among the plurality of partial filters, fade-out processing of gradually decreasing a degree of contribution of the first filter to the characteristic and fade-in processing of gradually increasing a degree of contribution of the second filter to the characteristic, when an instruction is provided for changing the characteristic formed by the set of filters,
- wherein the processor selects a partial filter used for characteristic formation before the instruction as the first filter, sets a parameter to at least one backup partial filter among the plurality of partial filters, the parameter corresponding to the characteristic indicated by the instruction, and selects the at least one backup partial filter as the second filter for the crossfading processing.
A filter characteristics changing method of a filter characteristics changing device, the method comprising:
- performing, when an instruction is provided for changing a characteristic of a set of filters which includes a plurality of partial filters and which forms a characteristic by combining at least two filters selected from among the plurality of partial filters, fade-out processing of gradually decreasing a degree of contribution of a first filter to the characteristic and fade-in processing of gradually increasing a degree of contribution of a second filter to the characteristic, as crossfading processing for the first filter and the second filter which are selected from among the plurality of partial filters,
- wherein the device selects a partial filter used for characteristic formation before the instruction as the first filter, sets a parameter to at least one backup partial filter among the plurality of partial filters, the parameter corresponding to the characteristic indicated by the instruction, and selects the at least one backup partial filter as the second filter for the crossfading processing.
A non-transitory computer-readable storage medium having stored thereon a program that is executable by a computer to perform functions comprising:
- performing, when an instruction is provided for changing a characteristic of a set of filters which includes a plurality of partial filters and which forms a characteristic by combining at least two filters selected from among the plurality of partial filters, fade-out processing of gradually decreasing a degree of contribution of a first filter to the characteristic and fade-in processing of gradually increasing a degree of contribution of a second filter to the characteristic, as crossfading processing for the first filter and the second filter which are selected from among the plurality of partial filters,
- wherein in the performing the crossfading processing, the computer selects a filter used for characteristic formation before the instruction as the first filter, sets a parameter to at least one backup partial filter among the plurality of partial filters, the parameter corresponding to the characteristic indicated by the instruction, and selects the at least one backup partial filter as the second filter for the crossfading processing.
Dependencies are inferred from the claim text.