Song drumbeat recognition method and device, terminal and non-temporary computer readable storage medium
A recognition method and beat technology, applied in speech analysis, instruments, etc., can solve the problems of low recognition accuracy of drum beats, amplitude or phase changes that are easily near the judgment threshold, and unrecognizable problems
Active Publication Date: 2020-02-28
BEIJING THUNDERSTONE TECH CO LTD
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[0003] Existing drum beat recognition methods include time-domain drum beat recognition methods or frequency-domain drum beat recognition methods, wherein the time-domain drum beat recognition method has a certain recognition effect for low-frequency percussion music, and has a certain recognition effect for high-frequency percussion. The recognition effect of percussion instruments is poor, almost impossible to recognize, and the recognition accuracy of different songs is different due to the difference in average energy, and the frequency domain drum beat recognition method is obviously not as good as the recognition effect of low frequency percussion instruments. For the recognition effect of musical instruments, the amplitude or phase change of small-amplitude percussion sounds and high-frequency percussion sounds is likely to be near the threshold for judgment, resulting in a significant reduction in recognition accuracy
[0004] To sum up, the existing drum beat recognition methods still have their defects of low accuracy in drum beat recognition.
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[0059] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0060] In this specification, adjectives such as first and second may only be used to distinguish one element or action from another without necessarily requiring or implying any actual such relationship or order. Reference to an element or component or step (etc.) should not be construed as being limited to only one of the element, component, or step, but may be one or more of the element, component, or step, etc., where the circumstances permit.
[0061] In ...
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The invention relates to the field of voice signal processing and provides a song drumbeat recognition method and device, a terminal and a non-temporary computer readable storage medium, so as to achieve the technical effect of accurately recognizing drumbeats of various frequency in a song. The method comprises the following steps of performing normalization processing on audio data of a to-be-recognized drumbeat to obtain normalized audio data; analyzing the high-frequency band characteristics of the normalized audio data in a frequency domain, and extracting a high-frequency beat sequence of the normalized audio data; analyzing the low-frequency band characteristics of the normalized audio data in the time domain, and extracting a low-frequency beat sequence of the normalized audio data; and when the high-frequency beat sequence and the low-frequency beat sequence are integrated and if a beat BH exists in the high-frequency beat sequence, a beat BL exists in the low-frequency beat sequence, and the interval between the beat BH and the beat BL is smaller than a minimum beat spacing interval, only reserving the beat BH of the high-frequency beat sequence. According to the technical scheme, the drumbeats can be accurately recognized.
Description
technical field [0001] The present invention relates to the technical field of speech signal processing, and in particular to a method, device, terminal and non-transitory computer-readable storage medium for identifying drum beats of songs. Background technique [0002] The recognition of drum beats in songs can analyze the beat information produced by percussion instruments. It is generally used for the combination of songs and lights in KTV, that is, the synchronization of sound and light. It can also be used in music fountains to control the speed of the beat Light flicker processing, etc. [0003] Existing drum beat recognition methods include time-domain drum beat recognition methods or frequency-domain drum beat recognition methods, wherein the time-domain drum beat recognition method has a certain recognition effect for low-frequency percussion music, and has a certain recognition effect for high-frequency percussion. The recognition effect of percussion instruments...
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IPC IPC(8): G10L25/51G10L25/27
CPCG10L25/51G10L25/27
Inventor 宋冬梅武剑王宏
Owner BEIJING THUNDERSTONE TECH CO LTD