Automatic duplicating method and device for single track polyphonic music signals

A monophonic and music technology, applied in speech analysis, speech recognition, instruments, etc., can solve the problems of low or incapable multi-tone music signal transcription accuracy and achieve high accuracy

Inactive Publication Date: 2014-06-11
COMMUNICATION UNIVERSITY OF CHINA
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AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method and device for automatically transcribing monophonic polyphonic music signals to solve the

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  • Automatic duplicating method and device for single track polyphonic music signals
  • Automatic duplicating method and device for single track polyphonic music signals
  • Automatic duplicating method and device for single track polyphonic music signals

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Embodiment Construction

[0060] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0061] The invention provides a method for automatically transcribing monophonic polyphonic music signals, the method comprising:

[0062] Step 1. Receive a single-channel polyphonic music signal;

[0063] Step 2, separating monophonic polyphonic music signals to obtain multi-channel monophonic music signals;

[0064] The second step specifically includes: processing the polyphonic music signal into frames to obtain a plurality of audio frames, performing mute detection on each audio frame to determine whether it is a mute frame, performing multi-fundamental frequency detect...

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Abstract

The invention provides an automatic duplicating method and device for single track polyphonic music signals. The automatic duplicating method comprises the steps of receiving the single track polyphonic music signals, separating the single track polyphonic music signals to obtain multipath single-tone music signals, carrying out tone extraction on each single-tone music signal to determine musical instrument playing information, carrying out melody extraction, rhythm extraction and beat extraction on each single-tone music signal to obtain audio information, and obtaining polyphonic music score according to the musical instrument playing information and the audio information. According to the automatic duplicating method and device for the single track polyphonic music signals, the single track polyphonic music signals are separated into the multipath single-tone music signals, the melody extraction, the rhythm extraction and the beat extraction are carried out on each separated single-tone music signal to obtain the musical instrument playing information and the audio information, and therefore the polyphonic music score with a high accuracy rate is obtained according to the musical instrument playing information and the audio information.

Description

technical field [0001] The invention relates to the technical field of digital signal processing, in particular to a method and device for automatically transcribing monophonic polyphonic music signals. Background technique [0002] With the advancement of digital signal processing technology, the transmission and storage methods of music signals have also become diversified. The score of a piece of music signal contains almost all the information in the music, including melody, rhythm, beat and so on. With some audio software, it is even possible to create or modify musical notation to generate new musical signals without actual instrument performance. If the computer can automatically obtain the score from the time-domain music signal, it will be of great significance to the further development of music. [0003] With the development of music signal processing technology, various music signal automatic transcription devices have been produced. However, the music signal ...

Claims

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Application Information

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IPC IPC(8): G10L15/02G10L15/26
Inventor 王晖王雨田朱兵王颖宫妍竹
Owner COMMUNICATION UNIVERSITY OF CHINA
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