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1495 Uppsatser om Perception of sound - Sida 3 av 100

Undersökning av ljudnivåer på skolgårdar : - samt hur fasad och fönster dimensioneras med uppmätta värden

This report is written on commission by WSP Acoustics. The report studies the outdoor sound levels on school yards in Stockholm. The questions given by the company to be answered was what are the actual sound levels at diffrent school yards with low traffic noise and how can you construct a facade element that reduces the sound level from the outside and meet the indoor requirements. Mesurements for four hours was done at eight schools set north and south of the city centre. The measurement period included one school break and one lunch break.

Barn och buller : Hur barn och verksamhet på förskolan påverkas av en hög ljudnivå

There are a lot of different sounds in our sound saturated time. Noise is an unwishable soundand a high sound level can give short- or lingering problems for both children and adults.The purpose was to find out if and in that case why children and the activity at the pre-schoolaffects by a high soundlevel. Another purpose was to examine what the effects would be if thepedagogues set about the work to get a good sound environment at pre-school.The investigation was accomplished in shape of qualitative interwievs where six pedagoguesfrom different pre-schools answered questions about a high soundlevel.All of them have been educated to hearing pilotes.The result of this investigation shows that some pre-schools have a high sound levels but notall of them. In those cases where there is a high soundlevel are there often too many childrenat the same place on the same time. That makes the soundlevel even higher and both childrenand adults are getting tired.By improving the sound environment at the pre-school both children and adults often gets abetter activity.Keywords: high soundlevel, hearingpilot, noise, affects on children..

The Sound of Drums - Trumsoundets förändring över tre decennier

Denna uppsats undersöker hur trumsoundet förändrades inom produktionen avpop- och rockmusik från 60-tal till 80-tal och sambandet med förändringar iinspelningsteknik. Uppsatsen syftar även till att tydliggöra hur dagens diskurs omsound har växt fram och hur sound har blivit ett estetiskt verktyg och enkonsumtionsvara. Metoden som har använts är lyssningsbaserad analys ochjämförelser av inspelningar från respektive decennium, samt att resonemang ochresultat i uppsatsen har återknutits till tidigare forskning om sound. Resultatet avanalysen visar att inspelningstekniken har haft en avgörande betydelse för hurtrumsoundet inom berörda populärmusikaliska genreområden har förändrats och dessmöjligheter och förutsättningar satte soundskapande fokus på rummet under 60-talet,instrumentet under 70-talet och effekterna under 80-talet. Undersökningen har visatatt sound på 60-talet relaterades till helhet, plats och person och senare till tekniskbearbetning av enskilda element i ljudbilden.

Akustiskt åtgärdsprojekt av en rockmusikklubb där live-musik spelas. Vad kan en audionom bidra med?

Introduction: The number of hearing impairments in Sweden is increasing. The largest increase is seen in ages 25-44. There are reasons to believe that these impairments are noise induced. Leisure time noise is not controlled in the same manner that industrial noise is. An ongoing conflict between city council officials and rock club owners, musicians and music event organizers about sound levels at smaller live music clubs exceeding the national sound level restrictions created the need for an acoustic intervention project.

Funktionskontroll av stegljudsisolering vid konstnärligt campus i Umeå

This report's aim is that by field measurements determine the function of Aprobo soundproofing material dB2 for reducing impact sounds, the measurements is done in ?the school for fine art? in Umeå also known as ?konstnärligt campus building nine?. The construction technique is used in areas sensitive to impact sound between different floors in the building. The measurement?s is also to do a function control of the buildings sound quality compared to Swedish and European standard when it comes to air sound, impact sound and reverberation time .

Hör upp!!

In this Bachelor thesis I explore sound and room as elements in design of user interfaces, both theoretical and practical in a specific application domain, to identify some of the advantages and disadvantage associated with these elements. As application domain I studied email clients and their usage at home amongst students at Blekinge Institute of Technology. In the study I found an activity, which seems to be highly distributed in the physical room where the user is located. The activity was notification of email and could take place in an arbitrary location of the home. I then augmented this activity with ideas from my theoretical assumption about room and sound.

Servostyrning med binaural ljudlokalisering

People are usually directed towards each other in conversations, to make it easier to hear what is being said. Algorithms for voice and speech recognition works in a similar way, regarding the microphone direction towards the sound source. In this thesis in electronics has therefore a servo control with binaural sound localization been implemented on a microcontroller connected to two microphones.When people perceive sound, the brain can estimate the sound source direction by comparing the time taken by the sound reaching one ear to the other [1]. The difference in time is called the interaural time difference, and can be calculated using various techniques. An exploratory comparison between the techniques cross-correlation and cross-spectrum analysis was carried out before implementation.

Skalkonstruktion : Med inriktning mot hållfasthet och dämpning av ljud

The sound part is mainly practical and is dependent on concepts that have been tested through measuring with a sound level meter. The design part is more theoretical and has been verified with CAD models and finite element analysis.With a sound damping hood on the compressor the sound level is reduced with up to four dB. An optimized absorbent for the compressor space gives a reduction with three dB. By using the insulation for the heat water tank as absorbent we can see a sound reduction on the lover octave bands. A reduction like this is elsewhere hard to achieve as at it requires thick absorbents.By changing the today?s insulation to the heat water tank to a form of polystyrene polymer insulation the weight from the heat pump above can be transferred to the stable heat water tank.

MÄTNING AV LJUDIMMISSION FRÅN VINDKRAFT. VIDAREUTVECKLING AV METOD FÖR MÄTNING

The Swedish government have a goal that wind turbines shall produce 30 TWh by the year 2020, compared to about 3,5 TWh produced in Sweden during 2010. To minimize the disturbance that wind turbines create the Swedish Environmental Protection Agency has stated a guideline value that noise from wind turbines at nearby residents shouldn?t exceed 40 dBA, at 8 m/s wind speed. With advanced calculation models, like Nord 2000, the emitted sound from future wind turbines can be calculated at an early stage to optimize the power production without exceeding the 40 dBA. When the turbines have been built there is a need to verify that they really are within the guideline.

Vad händer om man vänder på schh? : En undersökning om bakgrundsljud på bibliotek

Since the role of the libraries as merely a place for loans has decreased, the importance of giving the visitors a total experience has increased.The aim of my thesis was to investigate whether a change in the sound environment at the library of Jokkmokk could generate more satisfied visitors, whether they are borrowers or use the library for other purposes. The change in the sound environment was to be effected by means of a background sound experiment in the magazine room at the library. Action research was used as a research strategy and observations and interviews as method to collect data.The experiment was conducted with two selected sounds of nature: birdsong and a rippling brook. The observations and interviews were executeted in three stages: 1. Without any background sound.

Ljud och musik i varumärkesbyggande

This thesis aim to explain which part sound and music possess as a branding tool. We consider this to be of relevance since there is very limited reseach conducted on the subject. To fulfill the purpose of this thesis we have focused on three main issues. Our ambition is to describe this subject from a marketing perspective with the brand in focus.

Vilka pukstockar ska en pukist välja att spela med i olika sammanhang?

Uppsats för avläggande av filosofie kandidatexamen i Kulturvård, Trädgårdens hantverk och design, 15 hp, 2011.

UPPFATTNINGAR AV ETT NYTT RYSSLAND?V?RNKRAFT ELLER STRATEGISK TIMEOUT? Inverkan av Rysslandsuppfattning p? svensk-finsk nedrustning 1995?2009

This study investigates Swedish and Finnish official perception of Russia following the Cold War. This is aimed at categorizing changes in perception of Russia over time and assessing the impact of perception on defense policy. The study uses a comparative method where the contents of three foreign policy reports of Sweden and Finland respectively are analyzed according to dimensions based in image theory. Results show that Swedish and Finnish perceptions of Russia are overall similar between the reports being compared, except for Finnish perception of Russian relative power being significantly greater. Changes in Swedish and Finnish official perception do not clearly correlate with changes in defense policy.

Hör upp!!

In this Bachelor thesis I explore sound and room as elements in design of user interfaces, both theoretical and practical in a specific application domain, to identify some of the advantages and disadvantage associated with these elements. As application domain I studied email clients and their usage at home amongst students at Blekinge Institute of Technology. In the study I found an activity, which seems to be highly distributed in the physical room where the user is located. The activity was notification of email and could take place in an arbitrary location of the home. I then augmented this activity with ideas from my theoretical assumption about room and sound. The result was a rule-based agent for notification of email, which primarily uses sound as interaction style..

Skrivinlärning : En studie om motorikens betydelse i undervisningen

Motorik och perception är viktigta delar i alla barns utveckling,men hur viktgt är det för banrets skrivinlärning. Syftet med denna uppsats är att ta reda på hur pedagoerna ser på sambandet mellan motorik, perception och skrivinlärning och vad säger forskningen.Vad gör pedagogerna om de ser att barn har problem med motrik, perception eller skrivinlärning för att hjälpa barnet inom dessa områden. Hur påverkar det pedagogernas arbete samt hur påverkar det barnet om denne har sårigheter inom motrik och perception..

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