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Hierarchical song rhythm search method

A hierarchical and melodic technology, applied in the field of fast and accurate retrieval of similar melodies in the song library, can solve problems that are difficult to satisfy, and melody retrieval methods cannot take into account accuracy and speed at the same time

Inactive Publication Date: 2009-02-11
TSINGHUA UNIV +1
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AI Technical Summary

Problems solved by technology

Therefore, current melody retrieval methods cannot balance accuracy and speed at the same time, and it is difficult to meet the needs of practical applications.

Method used

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  • Hierarchical song rhythm search method
  • Hierarchical song rhythm search method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] see figure 1 ( figure 1 It is a schematic diagram of the module of "Hierarchical Song Melody Retrieval Method")

[0027] The humming recording data acquisition module controls the start and stop of the recording equipment, and can adjust the recording volume and set the corresponding recording sampling frequency and digits, so as to collect the humming recording data. The sampling frequency used in this system is 11025, and the number of digits is 16.

[0028] The input of this module is: humming data input through microphone and sound card equipment

[0029] The output of this module is: according to the set sampling frequency and number of digits, the humming recording data collected and saved

[0030] The processing flow of this module: first set the recording data sampling parameters: recording volume, sampling frequency and number of digits; then the operator starts the recording by clicking the button or the mouse, then starts recording, and saves the recorded ...

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Abstract

The invention provides a layer-progressive method for searching song melodies, which belongs to the melody search technical field, and is characterized in that a humming recording data acquisition module is arranged on a PC so as to save hums input from a speaker sound card as humming recording data; a humming melody feature extraction module extracts a humming note sequence and a framing humming pitch sequence which include melody features from the humming recording data; a song library melody feature extraction module extracts a note sequence and a framing pitch sequence from the midi file including song melodies; a quick search module performs a quick search in the whole song library for a relatively-small alternative melody set by a note-based search method; and an accurate search module performs a search in the alternative melody set for the ultimate result by a framing-based search method. The melody search method has the characteristics of high accuracy and high speed.

Description

technical field [0001] The invention relates to a song melody retrieval method; more specifically, the invention relates to a retrieval method for quickly and accurately querying similar melodies in a song library according to the humming input data of an operator. Background technique [0002] Melody retrieval based on humming queries has been an important problem in the field of music content-based analysis. Since there are usually tens of thousands of songs in the song database, and each song is usually in the length of 3 to 5 minutes, the amount of melody data in the entire song library is very large. Therefore, the two major problems faced by melody retrieval are retrieval accuracy and retrieval speed. Traditional melody retrieval methods can be divided into two categories, one is note-based retrieval method, and the other is frame-based retrieval method. The first type of method first divides the melody data into notes to obtain a note sequence composed of note objec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G10H1/00
Inventor 王智张钹张云刚
Owner TSINGHUA UNIV
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