1, 2, 3 Recording: registering high quality audio in the classroom

Authors

  • Alex Bellucco Centro de Ciências Tecnológicas, Universidade do Estado de Santa Catarina, Joinville
  • David William Cordeiro Marcondes Masters Degree of Programa de Pós-Graduação em Física, UDESC, Joinville

DOI:

https://doi.org/10.5007/2175-7941.2016v33n2p641

Abstract

The audio record with acceptable quality of video records, which will be used in research on teaching and learning processes in the classroom, presents itself as a major obstacle to educational research. In this paper, we present a apparated aimed at minimizing this difficulty - the microphone boundary based on pressure zone microphone by Crow (PZM). We describe how to build it further explained yet how to build a preamplifier to amplify the microphone signal and also a source regulated to provide the power of these apparatus. The recordings obtained with this equipment have a much higher quality than those obtained with conventional microphones empowering investigations which use this type of record.

Author Biographies

Alex Bellucco, Centro de Ciências Tecnológicas, Universidade do Estado de Santa Catarina, Joinville

DFIS-UDESC-CCT

Doutor em Educação - Ensino de Ciências e Matemática

David William Cordeiro Marcondes, Masters Degree of Programa de Pós-Graduação em Física, UDESC, Joinville

Published

2016-09-08

How to Cite

Bellucco, A., & Cordeiro Marcondes, D. W. (2016). 1, 2, 3 Recording: registering high quality audio in the classroom. Caderno Brasileiro De Ensino De Física, 33(2), 641–666. https://doi.org/10.5007/2175-7941.2016v33n2p641

Issue

Section

Atividades experimentais no ensino de Física