Audio injection regulation sound design method based on band-limited noise

Abstract

The invention provides an audio injection regulation sound design method based on band-limited noise. The method comprises the steps: selecting corresponding alternative regulation sound from a plurality of band-limited noise types, carrying out the superposition of the alternative regulation sound and target sound to obtain a plurality of superposed sounds, and determining a regulation sound type with an annoyance reduction effect through listening test; superposing the determined regulation sound and the target sound at different signal-to-noise ratios, and determining an optimal signal-to-noise ratio in reducing the annoyance effect through listening test; carrying out parameter design on the regulation sound, and obtaining regulation sound parameters which enable the annoyance of the target sound to be reduced and the effect to be optimal through listening test; and injecting the optimal regulation sound into the target sound to obtain the superposed sound, extracting psychological acoustic parameters of the superposed sound, and establishing an annoyance degree model of the superposed sound. Starting from the subjective auditory feeling of people, the annoyance feeling of the target sound is reduced through the audio injection method, and the regulation sound parameters are optimally designed, so that the effect of the audio injection method is optimized, and the practicability is high; and meanwhile, the annoyance degree model of the superposed sound is given, so that more regulation and control sound parameter designs can be conveniently carried out.

Description

technical field [0001] The invention belongs to the technical field of noise annoyance control, and in particular relates to a parameter design method when the control sound is band-limited noise in an audio frequency injection method. Background technique [0002] Aircraft cabin noise is an important indicator that affects the comfort of passengers. Severe cabin noise will affect the comfort of passengers and pilots. At present, measures to reduce noise annoyance in aircraft cabins are mainly carried out from two aspects: passive control and active control. In the current method, the low-frequency noise reduction effect of passive control is not good, and the effective frequency band of the active control method is narrow. [0003] The audio injection method is different from the above two methods. According to the energy masking effect when the sound is superimposed, the effect of reducing the annoyance of the original noise is achieved by adding artificially adjustable a...

AI Technical Summary

Problems solved by technology

There are many types of target sounds. According to the characteristics of target sounds, the optional types of control sounds are limited. In practice, there will be problems that effective control sounds cannot be found.

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