Count. Heping District belongs to Shenyang, Liaoning Province, and is located in the central area of Shenyang. Piano and singing training classes in residential buildings in Heping District, Shenyang disturb residents' rest, so it is noise. The standard usage of noise is noise. From the physiological point of view, any sound that interferes with people's rest, study and work and the sound that people want to hear, that is, unnecessary sound, are collectively called noise.