| 摘要 |
PROBLEM TO BE SOLVED: To present an estimation index of musical sound.SOLUTION: A reference feature amount storage part 22 is stored with a reference feature amount extracted from a reference musical sound signal. A richness calculation part 17 calculates richness by comparing the feature amount of an inputted musical sound signal with the reference feature amount. An attack articulation calculation part 18 calculates an attack articulation by comparing the feature amount of the inputted musical sound signal with the reference feature amount. A pitch stability calculation part 14 detects a pitch from the inputted musical sound signal and calculates a pitch stability in the predetermined time zone. A sound volume stability calculation part 15 calculates a sound volume from the inputted musical sound signal, and calculates a sound volume stability in the predetermined time zone. A sound tone stability calculation part 15 calculates frequency spectra from the inputted musical sound signal, and calculates a tone color stability in the predetermined time-zone. An estimation result output part 21 outputs the richness, the attack articulation, the pitch stability, the sound volume stability, and the tone color stability as an estimation result.SELECTED DRAWING: Figure 1 |
