Abstract ▼ AI-Helper

Generally, a sound pressure level (A-weighted) and sound power are commonly used to quantify the noise of product in the industrial field. But sound pressure level and sound power cannot represent the noise. This is
why human sensing noise is very complex. So there are so many studies on the con...

Generally, a sound pressure level (A-weighted) and sound power are commonly used to quantify the noise of product in the industrial field. But sound pressure level and sound power cannot represent the noise. This is
why human sensing noise is very complex. So there are so many studies on the concept to represent the noise.
Four sound quality metrics is the very commonly used index to represent the noise (or to quantify the noise). Sound quality metrics are consisted with for indexes. (Loudness, Sharpness, Fluctuation strength, roughness)
In this study, there is the process of improving noise of air conditioner. To find the source of noise, narrow band spectrum analysis and sound intensity analysis are used.
To quantify the reduction of noise, both sound pressure level and four sound quality metrics are used in this study. Among the four sound quality metrics, loudness is the most suitable index in the whole range of compressor operation.

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