Learning Centre

Real-Time Polyphonic Octave Doubling for the Guitar

 |  Login

Show simple item record

dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Kargo, Jens Peter
dc.contributor.advisor Arknaes, Lars
dc.contributor.author Thuillier, Etienne
dc.date.accessioned 2016-04-20T10:36:03Z
dc.date.available 2016-04-20T10:36:03Z
dc.date.issued 2016-04-04
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/20158
dc.description.abstract This thesis studies digital signal processing solutions for enriching live guitar sound by way of mixing-in octave-doubled versions of the chords and melodies performed on the instrument in real-time. Following a review of techniques applicable for real-time polyphonic octave doubling, four candidate solutions are proposed, amongst which two novel methods: ERB-PS2 and ERB-SSM2. Performance of said candidates is compared to that of three state of the art effect pedal offerings of the market. In particular, an evaluation of the added roughness and transient alterations introduced by each solution in the output sound is conducted. The ERB-PS2 method, which consists in doubling the instantaneous phases of the sub-bands signals extracted with a constant-ERB-bandwidth non-decimated IIR filter bank, is found to provide the best overall performance amongst the candidates. This novel solution provides greatly reduced latency compared to the baseline pedals, with comparable, and in some case improved, sound quality. en
dc.format.extent 66+7
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.title Real-Time Polyphonic Octave Doubling for the Guitar en
dc.type G2 Pro gradu, diplomityö en
dc.contributor.school Sähkötekniikan korkeakoulu fi
dc.subject.keyword real-time en
dc.subject.keyword pitch-shifting en
dc.subject.keyword multi-resolution en
dc.subject.keyword sub-band en
dc.subject.keyword modulation en
dc.subject.keyword roughness en
dc.identifier.urn URN:NBN:fi:aalto-201604201818
dc.programme.major Acoustics and Audio Signal Processing en
dc.programme.mcode S3004 fi
dc.type.ontasot Master's thesis en
dc.type.ontasot Diplomityö fi
dc.contributor.supervisor Välimäki, Vesa
dc.programme TLT - Master’s Programme in Communications Ecosystem (TS2005) fi
dc.location P1 fi
local.aalto.openaccess yes
dc.rights.accesslevel openAccess
local.aalto.idinssi 53452
dc.type.publication masterThesis
dc.type.okm G2 Pro gradu, diplomityö

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search archive

Advanced Search

article-iconSubmit a publication