Identificação caixa-cinza de modelo de Wiener-Hammerstein para pedal de distorção
The advencement of electronics allowed the development of several types of audio effects, mostly applied to musical instruments. One of these effects is distortion, which shaped the sound of electric guitar as we know it today. Equipments that provided such effects became more robust and compact,...
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| Formato: | bachelorThesis |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/45271 |
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| Resumo: | The advencement of electronics allowed the development of several types of audio effects,
mostly applied to musical instruments. One of these effects is distortion, which shaped the
sound of electric guitar as we know it today. Equipments that provided such effects became
more robust and compact, combined with a greater diversity of tones. The digital electronics
allowed the creation of equipments that have several of these effects, called multi-effect
pedals, and unities that can model effects. One of the challenges in the development of
these equipments is to truly replicate famous distortion tones. For that purpose, it is
possible to model the desired effect through full knowledge of its electronic circuit or
through modeling based on the identification of the system in question. This work proposes
the digital modeling of the distortion pedal BOSS Blues Driver based on the identification
of the used parametric model. The used model is based on a Wiener-Hammerstein and its
parameters were optimized by a genetic algorithm. The results of the simulations were
evaluated by time-error calculus and a blind hearing test with 30 people. |
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