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Biblioteca sonora de carpintaria: técnicas de captação e documentação audiovisual
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O presente projeto investiga os sons associados às práticas de carpintaria e marcenaria, articulando captação sonora, documentação audiovisual, proteção de microfones e organização de ficheiros destinados a reutilização em contextos de produção audiovisual. A investigação partiu da necessidade de desenvolver uma abordagem adequada ao registo de ferramentas, gestos e materiais em ambiente real de oficina, considerando simultaneamente as condições acústicas do espaço e a presença de poeiras finas suscetíveis de comprometer o equipamento de gravação. A biblioteca sonora resultante reúne 712 ficheiros áudio em formato WAV, exportados a 24 bit e 96 kHz. Cada par ação–ferramenta foi registado através de quatro perspetivas complementares: microfonia de proximidade, configuração mid-side, microfone de contacto piezoelétrico e áudio integrado da câmara. Esta estrutura permite representar o detalhe tímbrico da fonte, a relação espacial com a oficina, as vibrações transmitidas pelos materiais e a dimensão documental do processo de captação.
Em paralelo, foram desenvolvidas cápsulas de proteção impressas em 3D e realizados ensaios comparativos com diferentes materiais porosos permeáveis ao ar, incluindo espuma de poliuretano, polipropileno não tecido, filtro HEPA, campo cirúrgico e membranas de ePTFE. Os testes permitiram observar alterações relativas na resposta em frequência introduzidas por cada solução, evidenciando o compromisso necessário entre proteção física e transparência acústica. Entre os materiais analisados, a espuma de poliuretano apresentou a menor interferência tímbrica, enquanto o material de máscara descartável revelou um equilíbrio particularmente relevante entre proteção e preservação da resposta sonora.
A organização dos ficheiros baseou-se no Universal Category System (UCS), complementado por metadados embutidos em Broadcast Wave Format (BWF). A documentação em vídeo associada aos sons torna visíveis ações, as ferramentas, os materiais e o posicionamento dos microfones. O projeto propõe, assim, uma biblioteca sonora contextualizada, orientada para pesquisa, reutilização e análise, aproximando práticas de carpintaria, criação sonora e documentação audiovisual.
This project investigates the sounds associated with carpentry and joinery practices, combining sound recording, audiovisual documentation, microphone protection, and file organization for reuse in audiovisual production contexts. The research emerged from the need to develop an appropriate approach to recording tools, gestures, and materials in a real workshop environment, while considering both the acoustic conditions of the space and the presence of fine dust capable of compromising recording equipment. The resulting sound library comprises 712 sounds in WAV format, exported at 24-bit and 96 kHz. Each action–tool pair was recorded from four complementary perspectives: close-miking, a Mid-Side configuration, a piezoelectric contact microphone, and the camera’s integrated audio. This structure makes it possible to represent the timbral detail of the source, its spatial relationship with the workshop, the vibrations transmitted through materials, and the documentary dimension of the recording process. In parallel, 3D-printed protective enclosures were developed and comparative tests were carried out using different air-permeable porous materials, including polyurethane foam, non-woven polypropylene, HEPA filter material, surgical drape material, and ePTFE membranes. The tests made it possible to observe the relative changes in frequency response introduced by each solution, highlighting the necessary compromise between physical protection and acoustic transparency. Among the materials analyzed, polyurethane foam produced the lowest timbral interference, while disposable mask material revealed a particularly relevant balance between protection and preservation of the sound response. File organization was based on the Universal Category System (UCS), complemented by embedded Broadcast Wave Format (BWF) metadata. The video documentation associated with the sounds makes the actions, tools, materials, and microphone placement visible. The project therefore proposes a contextualized sound library designed for research, reuse, and analysis, bringing together woodworking practices, sound creation, and audiovisual documentation.
This project investigates the sounds associated with carpentry and joinery practices, combining sound recording, audiovisual documentation, microphone protection, and file organization for reuse in audiovisual production contexts. The research emerged from the need to develop an appropriate approach to recording tools, gestures, and materials in a real workshop environment, while considering both the acoustic conditions of the space and the presence of fine dust capable of compromising recording equipment. The resulting sound library comprises 712 sounds in WAV format, exported at 24-bit and 96 kHz. Each action–tool pair was recorded from four complementary perspectives: close-miking, a Mid-Side configuration, a piezoelectric contact microphone, and the camera’s integrated audio. This structure makes it possible to represent the timbral detail of the source, its spatial relationship with the workshop, the vibrations transmitted through materials, and the documentary dimension of the recording process. In parallel, 3D-printed protective enclosures were developed and comparative tests were carried out using different air-permeable porous materials, including polyurethane foam, non-woven polypropylene, HEPA filter material, surgical drape material, and ePTFE membranes. The tests made it possible to observe the relative changes in frequency response introduced by each solution, highlighting the necessary compromise between physical protection and acoustic transparency. Among the materials analyzed, polyurethane foam produced the lowest timbral interference, while disposable mask material revealed a particularly relevant balance between protection and preservation of the sound response. File organization was based on the Universal Category System (UCS), complemented by embedded Broadcast Wave Format (BWF) metadata. The video documentation associated with the sounds makes the actions, tools, materials, and microphone placement visible. The project therefore proposes a contextualized sound library designed for research, reuse, and analysis, bringing together woodworking practices, sound creation, and audiovisual documentation.
Descrição
Palavras-chave
Sons de carpintaria Biblioteca sonora Madeira Captação de som Carpintaria Marcenaria ePTFE Carpentry sounds Sound library Wood Sound recording Carpentry Joinery