Method for detecting audio signal beat points of bass drum, and terminal
AssigneeGuangzhou Baiguoyuan Information Technology Co., Ltd.
InventorFan LOU
Life of this patent
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Abstract
A method for detecting audio signal beat points of a bass drum, and a terminal. The method comprises: acquiring several intrinsic mode functions based on an inputted audio signal to be detected; calculating instantaneous signals, wherein the instantaneous signals includes instantaneous strength signals and instantaneous frequency signals corresponding to the several intrinsic mode functions; acquiring characteristic signals of the bass drum based on the instantaneous strength signals and the instantaneous frequency signals corresponding to the several intrinsic mode functions; performing peak detection on the characteristic signals to acquire a plurality of peak points; and acquiring the beat points of the bass drum based on the plurality of peak points.
Claims19
A method for detecting audio signal beat points of a bass drum, comprising:
- acquiring a plurality of intrinsic mode functions based on an input audio signal to be detected;
- calculating instantaneous signals corresponding to the plurality of intrinsic mode functions, wherein the instantaneous signals comprises instantaneous strength signals and instantaneous frequency signals;
- acquiring characteristic signals of the bass drum based on the instantaneous signals corresponding to the plurality of intrinsic mode functions;
- performing peak detection on the characteristic signals to acquire a plurality of peak points;
- and
- acquiring beat points of the bass drum based on the plurality of peak points.
Dependencies are inferred from the claim text.