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Beat analysis of musical signals
| Details |
Inventors: Lu, Lie; Zhang, Hong-Jiang;
Assignee: Microsoft Corporation (Redmond, WA)
Primary Examiner: Donels; Jeffrey W
Assistant Examiner:
Attorney, Agent or Firm: Lee & Hayes, PLLC
A system that analyzes music to detect musical beats and to rectify beats that are out of sync with the actual beat phase of the music. The music analysis includes onset detection, tempo/meter estimation, and beat analysis, which includes the rectification of out-of-sync beats. |
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DETAILED DESCRIPTION Overview The following discussion is directed to a system that analyzes music to detect the beat of the music.
Advantages of this system include an improved approach to beat detection that does not require an assumption of the musical time signature or hierarchical meter.
Another advantage is a process for rectifying out-of-sync beats based on tempo consistency across the whole musical excerpt.
Exemplary Environment FIG.
1 illustrates an exemplary computing environment 100 suitable for beat analysis and detection in music.
Although one specific computing configuration is shown in FIG.
1, various computers may be implemented in other computing configurations that are suitable for performing beat analysis and detection.
The computing environment 100 includes a general-purpose computing system in the form of a computer 102.
The components of computer 102 may include, but are not limited to, one or more processors or processing units 104, a system memory 106, and a system bus 108 that couples various system components including the processor 104 to the system memory 106.
The system bus 108 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures.
An example of a system bus 108 would be a Peripheral Component Interconnects (PCI) bus, also known as a Mezzanine bus.
Computer 102 includes a variety of computer-readable media.
Such media can be any available media that is accessible by computer 102 and includes both volatile and non-volatile media, removable and non-removable media.
The system memory 106 includes computer readable media in the form of volatile memory, such as random access memory (RAM) 110, and/or non-volatile memory, such as read only memory (ROM) 112.
A basic input/output system (BIOS) 114, containing the basic routines that help to transfer information between elements within computer 102, such as during start-up, is stored in ROM 112
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