Browsing Institutt for elektroniske systemer by Subject "Akustikk"
Now showing items 1-11 of 11
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A Method of Designing Wide Dispersion Waveguides Using Finite Element Analysis
(Master thesis, 2011)High frequency dispersion has a great influence on the perceived performance of a loudspeaker. The directivity of a single transducer primarily depends on driver size, however directivity can be modified using an acoustical ... -
Adaptive Coding and Modulation Techniques for HF Communication: Performance of different adaption techniques implemented with the HDL+ protocol
(Master thesis, 2009)The main goal of this thesis is to present two good alternatives for the HDL+ protocol proposed for ratification in STANAG 4538, as this partially is restricted by a patent claims. The HDL+ protocol is used as a starting ... -
Analyse av en platehøyttaler ved elementmetoden
(Master thesis, 2010)Denne oppgaven tar for seg avstråling fra en platehøyttaler (såkalt Distributed Mo- de Loudspeaker, DML). Ved hjelp av simuleringer av panelet med endelig element- metoden i COMSOL Multiphysics, beregning av avstråling ved ... -
Are Musicians Affected by Room Acoustics in Rehearsal Rooms?
(Master thesis, 2012)This study has investigated to what extent musicians adjust their source levels to different music rehearsal rooms. In the experiment, six amateur musicians were to perform the same song i four different rehearsal rooms, ... -
Auraliseringssystem for ikke-ideelle lytterom
(Master thesis, 2010)Denne oppgaven tar utgangspunkt i å undersøke hvordan ikke-ideelle lytterom påvirker lydsignalet i en auralisering, der auraliseringen blir presentert ved et konvensjonelt høyttalersystem. Metoden som blir tatt i bruk for ... -
Auralization using headphones
(Master thesis, 2012)In this report various techniques used to estimate head related impulse responses are compared. The purpose is to investigate the effectiveness of presenting auralization via the QuietPro system's earplugs, and see if sound ... -
Computer Assisted Pronunciation Training: Evaluation of non-native vowel length pronunciation
(Master thesis, 2009)Computer Assisted Pronunciation Training systems have become popular tools to train on second languages. Many second language learners prefer to train on pronunciation in a stress free environment with no other listeners. ... -
Demping av maskinstøy for mikrofon montert på utsiden av kjøretøy
(Master thesis, 2012)Målinger, analyse og filtrering av maskinstøy fra et militært kjøretøy, der hovedfokuset i oppgaven er å skape best mulige forhold for forståelse av tale. -
Prediksjon av romakustiske forhold i rom med ujevn absorpsjonsfordeling
(Master thesis, 2012)SammendragDenne oppgaven ser på metoder for databasert prediksjon av spredningsfaktorer. Teorien bak dette har blitt presentert. Det har blitt utarbeidet en metode for å lage måleserier med impulsresponser langs en linje ... -
Room Acoustic Conditions for Audio and Video Conferencing
(Master thesis, 2012)A video conferencing situation combines the acoustical properties of two rooms. As the talker is located in a one room, the sound reaching the listener in an other room will be colored by the acoustical characteristics of ... -
The Optimal Packet Duration of ALOHA and CSMA in Ad Hoc Wireless Networks
(Master thesis, 2009)In this thesis the optimal transmission rate in ad hoc wireless networks is analyzed. The performance metric used in the analysis is probability of outage. In our system model, users/packets arrive randomly in space and ...