Sound quality satisfaction degree grading and limit value determining method

Abstract

The invention provides a sound quality satisfaction degree grading and limit value determining method, which is used for determining a grading method based on a sound quality index and determining a sound quality index limit value of each level on the basis of a relation curve of the sound quality index and an accumulative level capacity ratio in combination with the sound quality investigation satisfaction degree. The method provides a simple and easily understood noise evaluation grade index similar to an energy efficiency index for consumers to replace a sound pressure level, the index is established on the basis of sound quality and better fits the subjective feeling of people, the consideration of a user on the sound performance of a product is improved, comprehensive understanding of the product is promoted, consumers can select suitable products, and the user experience is improved.

Description

Technical field [0001] The present invention belongs to the field of psychoacoustic quality, and specifically, a method of performing product noise grading and limiting based on acoustic quality, especially for household appliances. Background technique [0002] For a long time, the objective parametric A-Weighted Soundpressure Level, A-Weighted Soundpressure Level, the A-Weighted Soundpressure Level, the A-Weighted Soundpressure Level, the A-Weighted Soundpressure Level, and these single parameters cannot fully characterize the perceptual characteristics of the human ear, need to introduce more complete Indicators, on the other hand, for most customers, non-related professional people do not clear the concept of decibels, and the energy relationships expressed. [0003] The objective parameters of traditional evaluation noise include A sound level, C sound stage, accumulated percent A sound level, noise, noise staining, and more. A sound level and C sound level are the frequency...

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Problems solved by technology

[0005] Aiming at the problem that the existing objective parameter grading for evaluating the noise of household appliances cannot fully represent people’s subjective perception of noise, this invention proposes a sound quality satisfaction grading and limit value determination method, based on the sound quality index and cumulative level capacity The relationship curve of the ratio, combined with the satisfaction of the sound quality survey, so as to determine the grading method based on the sound quality index and determine the limit value of the sound quality index at each level

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