Compresión de Audio Basada en Codificación Subbanda

Llanos, Aura Polo; Algarín, Carlos Robles; Fula, Jordan Guillot; Llanos, Aura Polo; Algarín, Carlos Robles; Fula, Jordan Guillot

dc.contributor		en-US
dc.creator	Llanos, Aura Polo
dc.creator	Algarín, Carlos Robles
dc.creator	Fula, Jordan Guillot
dc.creator	Llanos, Aura Polo
dc.creator	Algarín, Carlos Robles
dc.creator	Fula, Jordan Guillot
dc.date	2018-02-11
dc.date.accessioned	2018-02-23T17:16:22Z
dc.date.available	2018-02-23T17:16:22Z
dc.identifier	https://knepublishing.com/index.php/KnE-Engineering/article/view/1510
dc.identifier	10.18502/keg.v3i1.1510
dc.identifier.uri	http://ridda2.utp.ac.pa/handle/123456789/4322
dc.description	An 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 compression	en-US
dc.format	application/msword
dc.format	application/pdf
dc.format	application/xml
dc.language	eng
dc.publisher	KnE Publishing	en-US
dc.relation	https://knepublishing.com/index.php/KnE-Engineering/article/view/1510/3301
dc.relation	https://knepublishing.com/index.php/KnE-Engineering/article/view/1510/3585
dc.relation	https://knepublishing.com/index.php/KnE-Engineering/article/view/1510/3586
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	https://creativecommons.org/licenses/by/4.0/
dc.source	2518-6841
dc.source	KnE Engineering; 6th Engineering, Science and Technology Conference - Panama 2017 (ESTEC 2017); 893-903	en-US
dc.title	Compresión de Audio Basada en Codificación Subbanda	en-US
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion

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2017: 6th Engineering, Science and Technology Conference - Panama (ESTEC 2017) [115]
6th Engineering, Science and Technology Conference (ESTEC 2017) organized by the Universidad Tecnologica de Panama (UTP)

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