Combined type plant audio frequency regulation and control method

The invention discloses a combined type plant audio frequency regulation and control method. The method comprises the following steps: 1) a combined type audio frequency loaded in a regulation and control environment is tested and analyzed for frequency response, and the sound pressure distributions of the combined audio frequency at different frequency points or frequency bands are confirmed; 2)wavelet comparison is conducted on the wavelet transform results of discrete combined audio frequency signals and expected output combined audio frequency signals, and the differences of the wavelet transform results of the discrete combined audio frequency signals and the expected output combined audio frequency signals at the frequency points or the octave frequency bands are acquired accordingto the wavelet comparison results of the sound pressure distributions at the frequency points or the frequency bands; and 3) according to the differences of the wavelet transform results of the discrete combined audio frequency signals and the expected output combined audio frequency signals at the frequency points or the octave frequency bands, the output voltages of a sound generator at the frequency points or the octave frequency bands are corrected, so that the sound pressures at the frequency points or the frequency bands of the combined type audio frequency can meet the requirements setby a plant audio frequency test. The method achieves the accurate sound energy distributions at the frequency points or the frequency bands of the combined type audio frequency in the sound wave regulation and control environment, and reduces the influence on audio frequency output from the poor frequency response effect of a loudspeaker or the reciprocating reflection of sound waves and materialabsorption in a facility environment.