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Rapid music assorting and searching method and device

A musical and fast technology, applied in the fields of electroacoustic musical instruments, special data processing applications, instruments, etc., can solve the problems of complex classification and slow classification.

Inactive Publication Date: 2013-07-03
SAMSUNG ELECTRONICS CO LTD +1
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  • Abstract
  • Description
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Problems solved by technology

In said application, GMM directly uses short-term features for classification, which makes the classification more complicated and the classification speed is relatively slow

Method used

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  • Rapid music assorting and searching method and device
  • Rapid music assorting and searching method and device
  • Rapid music assorting and searching method and device

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Embodiment Construction

[0026] Now, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Examples thereof are shown in the accompanying drawings. The same reference numerals in the drawings always refer to the same components and steps. The embodiments are described below to explain the present invention by referring to the figures.

[0027] Fig. 1 is an overview diagram of a system for fast music classification and retrieval according to an embodiment of the present invention. As shown in Figure 1, when a user inputs an MP3 file, the system outputs the emotion type of the input MP3 file.

[0028] The system according to the present invention mainly includes the following three parts: an MDCT-based feature extraction part 100, a new type of feature vector creation part 200, and a support vector machine (SVM)-based emotion classifier 300.

[0029] The MDCT-based feature extraction part 100 extracts acoustic music features from the compressed domain of...

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Abstract

The invention discloses a method and equipment used for quickly sorting and searching music; wherein, the method comprises the steps as follows: a music file is input; acoustic feature of each frame of the input music file based on MDCT is extracted; the energy of each frame is calculated; the acoustic features of each frame are sorted according to the energy size; the method also comprises the steps as follows: the sorted acoustic features are divided into a plurality of sections; average value and standard offsets are calculated according to one or more sections; the calculated average value and standard offset are combined into vectors. The short-time music feature (namely MFCC and timbre characteristic) used by the method and the equipment are directly gained from MDCT coefficients; therefore, the speed of feature extraction is extremely fast. In order to sort one piece of music, only part of the music file (12s duration) needs to be decoded.

Description

Technical field [0001] The present invention relates to a method for rapid music classification and retrieval, and more specifically, to a method and device that classify music files according to their emotions, and obtain a specific music file from a music collection Search for the music file most similar to the emotion of the specific music file. Background technique [0002] In the traditional method of automatically detecting the emotion of music, timbre features (e.g., spectral shape features, spectral contrast features) and rhythm features (e.g., intensity features), average intensity (strength), average regularity (regularity), and average beat ( tempo) is extracted and used to classify the emotion of music. In addition, in some traditional methods of automatically detecting the emotion of music, the Gaussian Mixture Model (GMM) is used to divide the emotion of music into four categories through a hierarchical structure. However, in the traditional method of automaticall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30G10H1/00
Inventor 邓菁朱璇史媛媛严基完李在原
Owner SAMSUNG ELECTRONICS CO LTD
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