Notation recording method and a notation recording device based on humming input
A technology for notation and speech frame, which is applied in the field of notation methods and devices based on humming input, can solve the problems of slow calculation speed, complexity, and insufficient algorithm accuracy, and achieves the effect of reducing the amount of calculation.
Inactive Publication Date: 2012-07-11
WONDERSHARE TECH CO LTD
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[0004] However, the existing technology has the following disadvantages: the accuracy of humming recognition is not high; the recognition algorithm is too complicated and needs to occupy a large system memory
For example, in the patent publication document whose application number is 200610086470.X, a pitch tracking and playing method and system are disclosed. Calculate the cross-correlation function, narrow the search range of the pitch frequency and other measures to achieve the purpose of being suitable for embedded systems, but because the algorithm accuracy is not high enough and relatively complex, there are still shortcomings of low recognition accuracy and slow calculation speed
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[0070] 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 creative efforts fall within the protection scope of the present invention.
[0071] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0072] See figure 1 , is a structural schematic diagram of the first embodiment of the music synthesis device based on humming input in the present invention, and the music synthesis device based on humming input includes: a framing module 10, a detection module 20, a processing module 30, a calculation module 40, Segmentation mod...
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The invention provides a notation recording method and a notation recording device based on humming input. The method includes conducting frame dividing processing on received voice signals according to a preset window function to obtain a plurality of voice frames, conducting silence detection on each voice frame to obtain energy of each voice frame, conducting filtering processing on each voice frame, conducting three-level clipping on filtered signals to obtain clipping signals each voice frame corresponds to, conducting standard self-correlation calculation on the clipping signals each voice frame corresponds to, extracting and obtaining pitch of each voice frame according calculation results, conducting musical note segmentation on voice signals according to the energy and the pitch of each voice frame to obtain segmentation results, obtaining a notation according to instrument types and segmentation results set by a user and outputting the notation. The notation recording device based on the humming input is further provided. The notation recording method and the notation recording device based on the humming input can achieve high-accuracy quick recognition of the humming input and notation conversion.
Description
technical field [0001] The invention relates to the technical field of humming recognition, in particular to a method and device for notation based on humming input. Background technique [0002] With the advancement of digital sound processing and music presentation technology, the way of music creation and preservation is also constantly updated. For professional musicians, they often burst into inspiration and hummed impromptuly, wanting to play this melody with a certain musical instrument, but could not find the instrument; for ordinary people without any knowledge of music theory, they would also hum when the interest came. Humming at will, when he wanted to use some instrument such as a piano to reproduce the tune he hummed before, he couldn't enjoy it because of his lack of piano playing skills. At this time, a portable device that can quickly convert the received voice signal into musical score output is required. [0003] At present, people have been able to adap...
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IPC IPC(8): G10H1/00G10H5/00G10L11/00G10L25/69
Inventor 赵伟峰
Owner WONDERSHARE TECH CO LTD