A method for automatic identification of sound quality of stringed instruments
A discriminant method and technology of stringed instruments, applied in the interdisciplinary field of musicology and information science, can solve problems such as inaccurate judgment, high labor cost, and fluctuation of reference standards
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[0069] The embodiments of the present invention will be described in detail below with reference to the examples.
[0070] Step 1: Automatic recognition of instrument type
[0071] Each type of stringed instrument and the timbre of its performance is unique, so the judging methods and parameters used are different. In order to realize the automation of sound quality evaluation, it is first necessary to automatically identify the type of musical instrument. The specific identification plan includes the following links:
[0072] 1) Extract 3 audio features to describe the type of instrument
[0073] a) Spectral barycenter G of each frame
[0074]
[0075] Among them, m is the window width, usually you can choose m=20ms, f n is the nth harmonic frequency of the sound, A n is the amplitude at the nth harmonic. Through the sliding of the sliding window, a series of spectral centers of gravity can be obtained, and the maximum value G can be calculated. M , the minimum valu...
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