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dc.contributoren-US
dc.creatorLlanos, Aura Polo
dc.creatorAlgarín, Carlos Robles
dc.creatorFula, Jordan Guillot
dc.creatorLlanos, Aura Polo
dc.creatorAlgarín, Carlos Robles
dc.creatorFula, Jordan Guillot
dc.date2018-02-11
dc.date.accessioned2018-02-23T17:16:22Z
dc.date.available2018-02-23T17:16:22Z
dc.identifierhttps://knepublishing.com/index.php/KnE-Engineering/article/view/1510
dc.identifier10.18502/keg.v3i1.1510
dc.identifier.urihttp://ridda2.utp.ac.pa/handle/123456789/4322
dc.descriptionAn eight channels subband audio codec is implemented for signals with 44.1 KHz and 16 bits per sample using Matlab. To achieve perfect reconstruction, a two channels QMF filter bank with cutoff frequency ω=π/2 is designed, based on an equiriple filter of 99 order. Seven stages of this bank are used to split the input into eight signals with sample rates from 2.76 to 11 KHz, which are coded from 1 to 16 bits depending on the band energy. To evaluate performance for three tracks in terms of similarity of input and output signals, a Mean Opinion Score (MOS) experiment with fifteen subjects was performed. The Euclidean Distance between spectrums was also measured. Results showed a fair similitude for two tracks and excellent for one. Compression factors above 96% were achieved.Keywords: subband coding, mean opinion score MOS, QMF filter banks, audio compressionen-US
dc.formatapplication/msword
dc.formatapplication/pdf
dc.formatapplication/xml
dc.languageeng
dc.publisherKnE Publishingen-US
dc.relationhttps://knepublishing.com/index.php/KnE-Engineering/article/view/1510/3301
dc.relationhttps://knepublishing.com/index.php/KnE-Engineering/article/view/1510/3585
dc.relationhttps://knepublishing.com/index.php/KnE-Engineering/article/view/1510/3586
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttps://creativecommons.org/licenses/by/4.0/
dc.source2518-6841
dc.sourceKnE Engineering; 6th Engineering, Science and Technology Conference - Panama 2017 (ESTEC 2017); 893-903en-US
dc.titleCompresión de Audio Basada en Codificación Subbandaen-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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