Essays about: "sound level measurement"

Showing result 1 - 5 of 28 essays containing the words sound level measurement.

  1. 1. Acoustic Characterization of Catalyst

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Surachit Dokson; [2023]
    Keywords : ;

    Abstract : The WHO has set a sound level threshold of 55 dB, beyond which noise is considered harmful to humans when exposed for an extended period of time. It is, however, estimated by the European Environmental Agency that over 110 million people in the EU are regularly exposed to levels of traffic noise above 55 dB. READ MORE

  3. 2. Automatic Maximum Sound Pressure Level (SPL) Measurements Inside Cars

    University essay from KTH/Teknisk akustik

    Author : Luyao Dong; [2023]
    Keywords : Audio Measurement; Distortions; Maximum Sound Pressure Level SPL ; Automotive Audio; Ljudmätning; distorsion; maximal ljudtrycksnivå; billjud;

    Abstract : With a growing interest in technical specifications among consumers, there is a need for accessible measurement tools that enable individuals to evaluate the performance of their equipment, including common speakers and car audio systems, beyond what the manufacturer provides. However, the existing measurement systems are often geared towards professionals. READ MORE

  4. 3. Experimental Study of Installation Effects on Cooling Fan Noise

    University essay from KTH/Marcus Wallenberg Laboratoriet MWL

    Author : Yu-Yu Lu; [2021]
    Keywords : Electric vehicles; Cooling fan noise; Installation effects; Free-space measurement; Wall-mounted measurement; In-vehicle measurement; Spectral decomposition method; Tonality; Broadband noise level.;

    Abstract : Owing to the ever-changing developments of battery and electric powertrain, vehicle electrification is the trend in the future. Without the presence of a combustion engine, masking effect from it reduces and noises from other components become perceivable. Among all, the cooling fan is one of the major noise sources. READ MORE

  5. 4. Acoustic Impact of working from home

    University essay from Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Teknisk akustik

    Author : Christoffer Larm; [2021]
    Keywords : Distance working; Office acoustics; Indoor sound environment; Noise annoyance; Technology and Engineering;

    Abstract : The outbreak of Covid-19 has resulted in major changes on office work. Many office workers have been almost exclusively working from home for the past year, which has led to different advantages and obstacles for the workers. READ MORE

  6. 5. Evaluation of outdoor environment in preschools using the soundscape approach

    University essay from Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Teknisk akustik

    Author : Semir Caban; [2020]
    Keywords : Soundscape; statistical analysis; psychoacoustics; outdoor sound environment; sound environment in preschools.; Technology and Engineering;

    Abstract : Exposure to high levels of noise may affect a person’s health and behavior. A lot of education in Swedish preschool occurs outdoor, which makes having good sound environment important for the children and the teachers. READ MORE