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US 10,347,222 B2Granted
Musical sound generation method for electronic wind instrument
AssigneeCasio Computer Co., Ltd.
InventorHiroyuki Sasaki
Life of this patent
Estimating the term…
Abstract
Calculation is performed to provide a delay and attenuated oscillation to a blowing pressure detected by a blowing pressure sensor which detects blowing pressure, and a musical sound is generated based on the blowing pressure subjected to the calculation. As a result, for example, a blowing feeling of an electronic wind instrument can be made closer to a blowing feeling of a natural musical instrument.
Claims14
A musical sound generation method comprising:
- acquiring a first blowing pressure detected by a blowing pressure sensor;
- performing a physical model calculation by a processor based on parameters stored in a memory and the first blowing pressure, the parameters defining a physical model corresponding to a weight connected to a spring, one end of which is fixed;
- and
- generating a musical sound based on a second blowing pressure obtained by performing the physical model calculation,
- wherein performing the physical model calculation comprises:
- initializing the parameters;
- calculating a first force generated in the spring at a current position of the weight;
- calculating a third force applied to the weight by adding the first force to a second force corresponding to the first blowing pressure;
- calculating a new position of the weight changed by the third force being applied to the weight;
- repeatedly executing a series of calculations including the calculation of the third force and the calculation of the new position of the weight at certain sampling intervals;
- and
- calculating the second blowing pressure based on the position of the weight calculated at the certain sampling intervals.
9 more elements
A musical sound generation apparatus comprising:
- a blowing pressure sensor which detects a first blowing pressure during musical performance;
- a memory which stores parameters defining a physical model corresponding to a weight connected to a spring, one end of which is fixed;
- and
- a processor which performs a physical model calculation based on the parameters stored in the memory and the first blowing pressure, and which generates a musical sound based on a second blowing pressure obtained by performing the physical model calculation,
- wherein performing the physical model calculation comprises:
- initializing the parameters;
- calculating a first force generated in the spring at a current position of the weight;
- calculating a third force applied to the weight by adding the first force to a second force corresponding to the first blowing pressure;
- calculating a new position of the weight changed by the third force being applied to the weight;
- repeatedly executing a series of calculations including the calculation of the third force and the calculation of the new position of the weight at certain sampling intervals;
- and
- calculating the second blowing pressure based on the position of the weight calculated at the certain sampling intervals.
9 more elements
Dependencies are inferred from the claim text.