In signal analysis, beat detection is using

computer software Software consists of computer programs that instruct the Execution (computing), execution of a computer. Software also includes design documents and specifications. The history of software is closely tied to the development of digital comput ...

computer hardware Computer hardware includes the physical parts of a computer, such as the central processing unit (CPU), random-access memory (RAM), motherboard, computer data storage, graphics card, sound card, and computer case. It includes external devices ...

to detect the beat of a

music Music is the arrangement of sound to create some combination of Musical form, form, harmony, melody, rhythm, or otherwise Musical expression, expressive content. Music is generally agreed to be a cultural universal that is present in all hum ...

al score. There are many methods available and beat detection is always a tradeoff between accuracy and speed. Beat detectors are common in music visualization software such as some media player plugins. The

algorithm In mathematics and computer science, an algorithm () is a finite sequence of Rigour#Mathematics, mathematically rigorous instructions, typically used to solve a class of specific Computational problem, problems or to perform a computation. Algo ...

s used may utilize simple statistical models based on

sound energy In physics, sound energy is a form of energy that can be heard by living things. Only those waves that have a frequency of 20 Hz to 20 kHz are audible to humans. However, this range is an average and will slightly change from individual t ...

or may involve sophisticated

comb filter In signal processing, a comb filter is a Filter (signal processing), filter implemented by adding a delayed version of a signal processing, signal to itself, causing constructive and destructive Interference (wave propagation), interference. The ...

networks or other means. They may be fast enough to run in real time or may be so slow as to only be able to analyze short sections of songs.

External links

Beat This > Beat Detection Algorithm

Audio Analysis using the Discrete Wavelet Transform
Signal processing {{music-software-stub

See also

External links