Vol. 25 No. 42 (2010): Acústica e Vibrações 42

Editorial

The number 42 of Acústica e Vibrações brings to the discussion topics relevant to Brazilian acoustics. The issue opens with a letter from the President of SOBRAC, Dinara X. da Paixão, who brings reflections on the current state of acoustics and SOBRAC.

The articles in issue 42, by authors from Brazil, Chile, and Spain, deal with issues such as terminology in acoustics, semantic descriptors, sound exposure through the use of headphones, the sound insulation of double walls with part of in MDF, the implementation of auditory filters from neural networks and impact noise assessment.

All these articles were reviewed by professors of acoustics from Brazilian universities. This procedure, adopted since issue 41, aims to improve the journal's Qualis grading, which is currently only B5.

In addition, given the layout problems that occurred in previous editions, which were fully or partially executed in MS Word, in this edition we chose to use the TEX-LATEX system for the entire journal.

Issue 42 also contains the report of activities carried out on the International Day of Awareness on the
Noise - INAD 2010. To differentiate the report from the technical-scientific articles, a different format was adopted for it. This procedure is also common in other journals that bring together informative material and technical articles in the same issue. The report shows that it is possible and necessary to share the issues of acoustics and noise pollution with society as a whole. The success of INAD 2010 actions is an invitation to engage new participants.

All these actions are the result of efforts made towards the common goals of our community, which yearns for the rapid evolution of our professional sector.

We would like to thank all the researchers who contributed to the articles sent to the journal, especially those who understood the moment of change and transformation that began since the 41st journal. of the articles in this issue.

We all have the challenge of improving our Qualis classification at Capes. It is up to the board, the council, and perhaps the general meeting to decide the direction of the magazine, preferably defining the rules very clearly. We will only be able to expand the frequency of our journal, with the qualitative and quantitative increase in submissions.

We invite the entire community to send their criticisms, suggestions, and especially articles so that we can build the desired Acoustics and Vibrations that are recognized by all.

We invite Brazilian professors and researchers to join the discussion and formulation committee of the new editorial project of Acústica e Vibrações.

Krisdany Vinícius S.M. Cavalcante and Stephan Paul

Summary content:

• Acoustics in Brazil: New Challenges;
• Tools for standardization of terms used in acoustics and vibrations;
• Evaluation of sound exposure due to the use of mp3 player headphones, in Santa Maria/RS;
• Acoustic insulation of transdoses made with wood derivatives (MDF);
• Adjectives as semantic descriptors for automotive and aircraft interior sounds and noises;
• Implementation and filters in critical bands using artificial neural networks;
• ISO 140-7 procedure for assessing impact noise;
• Report on the 2010 International Noise Awareness Day and 2011 planning (INAD/BR); and
• Congress Agenda.