Creating endless sounds

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Välimäki, Vesa
dc.contributor.author Rämö, Jussi
dc.contributor.author Esqueda Flores, Fabian
dc.date.accessioned 2018-12-10T10:27:29Z
dc.date.available 2018-12-10T10:27:29Z
dc.date.issued 2018-09-04
dc.identifier.citation Välimäki , V , Rämö , J & Esqueda Flores , F 2018 , Creating endless sounds . in Proceedings of the 21th International Conference on Digital Audio Effects . Proceedings of the International Conference on Digital Audio Effects , University of Aveiro , pp. 32-39 , International Conference on Digital Audio Effects , Aveiro , Portugal , 04/09/2018 . en
dc.identifier.issn 2413-6700
dc.identifier.issn 2413-6689
dc.identifier.other PURE UUID: b464b1d1-2da5-42b2-bda2-947f7d9a97a0
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/creating-endless-sounds(b464b1d1-2da5-42b2-bda2-947f7d9a97a0).html
dc.identifier.other PURE LINK: http://dafx2018.web.ua.pt/papers/DAFx2018_paper_6.pdf
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/30262007/DAFx2018_paper_6.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/35222
dc.description.abstract This paper proposes signal processing methods to extend a stationary part of an audio signal endlessly. A frequent occasion is that there is not enough audio material to build a synthesizer, but an example sound must be extended or modified for more variability. Filtering of a white noise signal with a filter designed based on high-order linear prediction or concatenation of the example signal can produce convincing arbitrarily long sounds, such as ambient noise or musical tones, and can be interpreted as a spectral freeze technique without looping. It is shown that the random input signal will pump energy to the narrow resonances of the filter so that lively and realistic variations in the sound are generated. For realtime implementation, this paper proposes to replace white noise with velvet noise, as this reduces the number of operations by 90% or more, with respect to standard convolution, without affecting the sound quality, or by FFT convolution, which can be simplified to the randomization of spectral phase and only taking the inverse FFT. Examples of producing endless airplane cabin noise and piano tones based on a short example recording are studied. The proposed methods lead to a new way to generate audio material for music, films, and gamin32g. en
dc.format.extent 8
dc.format.extent 32-39
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartof International Conference on Digital Audio Effects en
dc.relation.ispartofseries Proceedings of the 21th International Conference on Digital Audio Effects en
dc.relation.ispartofseries Proceedings of the International Conference on Digital Audio Effects en
dc.rights openAccess en
dc.subject.other Electrical and Electronic Engineering en
dc.subject.other 213 Electronic, automation and communications engineering, electronics en
dc.subject.other Signal processing en
dc.title Creating endless sounds en
dc.type A4 Artikkeli konferenssijulkaisussa fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Signal Processing and Acoustics
dc.contributor.department Department of Signal Processing and Acoustics en
dc.subject.keyword Audio systems
dc.subject.keyword digital filtering
dc.subject.keyword Digital signal processing
dc.subject.keyword Music technology
dc.subject.keyword Electrical and Electronic Engineering
dc.subject.keyword 213 Electronic, automation and communications engineering, electronics
dc.subject.keyword Signal processing
dc.identifier.urn URN:NBN:fi:aalto-201812106237
dc.type.version publishedVersion


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