Interior Noise and Low Frequency Noise Characteristics of Busan Metro Line 3 Noise

Plants Role in Noise Reduction of Interior Walls (Comparison of Noise Absorption in Native Species and Non-Native Species)

Noise pollution is one of the most important features of architectural spaces having a great impact on the comfort of residents. Therefore, providing appropriate and sustainable solutions for noise pollution control is essential. Today, with the use of man-made synthetic materials, it has been tried to improve the sound performance of buildings. The purpose of this study is to show the characte...

Low frequency noise and annoyance.

Low frequency noise, the frequency range from about 10 Hz to 200 Hz, has been recognised as a special environmental noise problem, particularly to sensitive people in their homes. Conventional methods of assessing annoyance, typically based on A-weighted equivalent level, are inadequate for low frequency noise and lead to incorrect decisions by regulatory authorities. There have been a large nu...

A W-band Simultaneously Matched Power and Noise Low Noise Amplifier Using CMOS 0.13µm

A complete procedure for the design of W-band low noise amplifier in MMIC technology is presented. The design is based on a simultaneously power and noise matched technique. For implementing the method, scalable bilateral transistor model parameters should be first extracted. The model is also used for transmission line utilized in the amplifier circuit. In the presented method, input/output ma...

Low Frequency Noise Characteristics of Multimode and Singlemode Laser Diodes

Low-frequency and Tonal Characteristics of Transformer Noise

Electricity substations and their associated transformers are necessary for community power needs. In NSW these substations are often located in rural areas where background noise is low. Noise ‘hum’ from the transformers can be an issue for residents located nearby to the substation, and the tonal and low-frequency nature of the noise can add to the annoyance. The NSW Industrial Noise Policy a...