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Binaural Monitoring for Live Music Performances.
KTH, School of Computer Science and Communication (CSC).
2012 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Author: Elías Zea

Title of the report: Binaural Monitoring for Live Music Performances

Abstract: Current monitoring systems for live music performance rely on having a sound engineer who manipulates sound levels, reverberation and/or panning of the sounds onstage to simulate a spatial rendering of the monitor sound. However, this conventional approach neglects two essential features of the sound field: directivity radiation patterns, and spatial localization; which are naturally perceived by the performers under non-amplified conditions. The present work comprises the design, implementation and evaluation of a monitoring system for live music performance that incorporates directivity radiation patterns and binaural presentation of audio. The system is based on four considerations: the directivity of musical instruments, the Room Impulse Response (RIR), binaural audio with individualized Head-Related Transfer Functions (HRTFs), and motion capture of both the musician's head and instrument. Tests with musicians performing simultaneously with this system were carried out in order to evaluate the method, and to identify errors and possible solutions. A survey was conducted to assess the musicians' initial response to the system in terms of its accuracy and realism, as well as the perceived degree of enhancement of the music making experience and the artistic value of the performance. The results point towards further research that might be of interest.

Abstract [sv]

Författare: Elías Zea

Titel: Binaural Medhörning för Förstärkta Live-framträdanden

Sammanfattning: Gängse medhörningssystem för livemusik förlitar sig på en ljudtekniker, som manipulerar ljudnivåer, efterklang och/eller panorering av medhörningen på scenen, för att därigenom simulera en ljudspatialisering. Denna konventionella metod försummar två av ljudfältets väsentliga aspekter: instrumentens frekvensberoende riktverkan, samt rumslokaliseringen, som intuitivt uppfattas av musiker när de spelar utan ljudförstärkning. Det här arbetet omfattar design, genomförande och utvärdering av ett medhörningssystem för livemusik som tar hänsyn till riktverkan och presenterar binauralt ljud. Systemet har fyra huvudkomponenter: musikinstrumentens riktverkan, ett rumsimpulssvar (RIR), binauralt ljud med individuella huvudrelaterade överföringsfunktioner (HRTF), och rörelseanalys av såväl musikerns huvud som av instrumentet. Systemet har utvärderats med musiker. En enkät utfördes för att bedöma musikernas första intryck av systemets noggrannhet och realism, liksom den upplevda graden av förbättring av musicerandet och utförandets konstnärliga värde. Resultaten pekar mot ytterligare forskning som kan vara av intresse.

Place, publisher, year, edition, pages
2012.
Series
Trita-CSC-E, ISSN 1653-5715 ; 2012:070
National Category
Computer Science
Identifiers
URN: urn:nbn:se:kth:diva-130998OAI: oai:DiVA.org:kth-130998DiVA: diva2:654444
Educational program
Master of Science in Engineering - Computer Science and Technology
Uppsok
Technology
Supervisors
Examiners
Available from: 2013-10-07 Created: 2013-10-07

Open Access in DiVA

No full text

Other links

http://www.nada.kth.se/utbildning/grukth/exjobb/rapportlistor/2012/rapporter12/zea_elias_12070.pdf
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