Over-limit noise sound source determination method, air conditioner, vehicle, noise control method and device

Abstract

The invention firstly provides an over-limit noise sound source determination method. The method comprises the following steps of: acquiring noise through a sound acquisition device, respectively comparing one or more pieces of acquired noise with standard noise, determining over-limit noise, carrying out octave analysis on the over-limit noise, and determining an over-limit sound source in an obtained noise frequency band. The invention further provides an air conditioner, a vehicle, a noise control method and a noise reduction device. According to the over-limit noise sound source determination method, the air conditioner, the vehicle, the noise control method and the noise reduction device, octave analysis is carried out on the over-limit noise, the over-limit sound source and the frequency of the over-limit sound source are determined, targeted intelligent noise reduction is carried out on the over-limit sound source, and sound quality after noise reduction is improved.

Description

technical field [0001] The invention relates to the technical field of air-conditioning products, in particular to a method for determining an excessive noise source, an air conditioner, a vehicle, and a noise control method and device. Background technique [0002] Inverter air conditioners adjust the output cooling capacity by automatically adjusting the operating frequency of the compressor and the speed of the fan according to the load changes such as the indoor set temperature target and the passenger capacity, so as to keep the temperature in the passenger room within the set temperature range. After the indoor temperature reaches the expected value, the air conditioner compressor maintains a certain speed, and the fan adjusts the speed to adjust the air volume and wind speed (that is, the speed of the rotor parts such as the fan and compressor changes), so the noise value and the sound spectrum emitted by the air conditioner itself are Changes; affected by the complex...

AI Technical Summary

Problems solved by technology

[0003] The current active noise reduction measures for rail vehicle systems are generally integrated inside the vehicle air duct or inside the compartment. The acoustic sensors and noise generators of the active noise reduction system are limited by the installation location and quantity, so it is impossible to monitor the inverter air conditioner and the interior of the unit in real time. The noise state of each rotor component cannot simultaneously reduce the impact of the air conditioner’s own operating noise and environmental noise on the interior of the car, which affects the ride comfort of the vehicle

When performing intelligent noise reduction, the overall noise reduction process is usually directly aimed at the noise exceeding the standard value. Although the noise is reduced, because the noise itself and the cause of the noise exceeding the limit are not analyzed, the noise value is only reduced overall. And it can't effectively improve the sound quality of the noise

In the existing intelligent noise reduction, there is no method to determine the noise exceeding the limit

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