Determinación de las características del espectro de sonido de una guitarra clásica cajamarquina
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Date
2024
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Universidad Nacional de Trujillo
Abstract
En este trabajo hemos caracterizado la señal sonora emitidas por dos guitarras clásicas fabricadas con maderas peruanas y una guitarra clásica importada de muy bajo precio denominada “guitarra china”. El sonido de las notas musicales fue registrado por un micrófono profesional (Warm Audio WA-87 R2), estos registros fueron convertidos a formato wav e importado a MATLAB, fue necesario codificación de un programa para que la señal de audio sea capturada, obteniendo gráficas de las envolventes y el espectro de frecuencias del sonido de las guitarras. El estudio y análisis de las señales sonoras de las guitarras es considerado preliminar con el fin de mejorar la calidad del sonido que emiten para realizar modificaciones controladas de sus componentes estructurales
Abstract In this work we have characterized the sound signal emitted by two classical guitars made with Peruvian woods and a very low price imported classical guitar called “Chinese guitar.” The sound of the musical notes was recorded by a professional microphone (Warm Audio WA-87 R2), these records were converted to wav format and imported into MATLAB, it was necessary to encode a program so that the audio signal was captured, obtaining graphics of the envelopes and frequency spectrum of the guitar sound. The study and analysis of the sound signals of guitars is considered preliminary in order to improve the quality of the sound they emit to make controlled modifications to their structural components
Abstract In this work we have characterized the sound signal emitted by two classical guitars made with Peruvian woods and a very low price imported classical guitar called “Chinese guitar.” The sound of the musical notes was recorded by a professional microphone (Warm Audio WA-87 R2), these records were converted to wav format and imported into MATLAB, it was necessary to encode a program so that the audio signal was captured, obtaining graphics of the envelopes and frequency spectrum of the guitar sound. The study and analysis of the sound signals of guitars is considered preliminary in order to improve the quality of the sound they emit to make controlled modifications to their structural components
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Keywords
Guitarra clásica, espectro de sonido, transformada rápida de Fourier, Matlab.