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2ND Edition reviewed and increased

Architectural Acoustics

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Summary

1. INTRODUCTION… 19

2. SOUND
2.1. Concept… 25
2.2. Sound waves…25
2.3. Frequency and period… 26
2.4. Propagation speed of sound… 27
2.5. Wavelength… 28
2.6. Sound intensity… 28
2.7. Sound range… 29
2.8. Sound masking… 29
2.9. Diffraction of sound… 30
2.10. Refraction of sound… 31
2.11. Sound resonance… 31
2.12. Sound resonance… 31
2.13. Intelligibility… 32
2.14. Reverberation… 32
2.15. Eco… 33
2.16. Throbbing eco… 34
2.17. Steady waves… 34
2.18. The decibel… 35
2.19. The auditory perception of sound… 35
2.20. Sound attenuation due to distance… 37
2.21. Adding decibels… 38

3. NOISE
3.1. Concept… 41
3.2. Effects of noise on men… 42
3.3. Airbone sound… 43
3.4. Noise of impact… 44
3.5. Verification of noise levels… 44
3.6. The decibel a: db(a)… 46
3.7. Acceptable noise levels… 47
3.8. Noise doses… 49

4. ACOUSTIC BEHAVIOR OF THE MATERIALS
4.1. Concept… 55
4.2. Materials and acoustic insulation systems… 56
4.3. Mass law… 60
4.4. Soundproofing x wavelength… 61
4.5. The effect mass/ mole/ mass… 62
4.6. Materials and acoustic absorvent systems… 63

5. ACOUSTIC TREATMENT
5.1. Concept… 87
5.2. Soundproofing… 88
5.3. Sound absorption… 90
5.4. Acoustic conditioning… 92
5.5. Reverberation time… 93
5.6. Reverberation optimun time… 94
5.7. Geometry inside the enclosures… 96

6. MATTERS OF ARCHITECTURAL ACOUSTICS
6.1. Acoustic scantlings… 103
6.2. Acoustic barriers… 106
6.3. Noise attenuators… 107
6.4. Noises in the vetilation shafts of buildings… 109
6.5. Noise of impact in floor slabs… 112
6.6. Noise of impact in metal roofing… 119
6.7. Acoustic separators and office environments… 120
6.8. Engines airbone sound… 122
6.9. Vibration of machinery and engines… 124

7. SPECIFIC TYPOLOGY
7.1. Office environments… 129
7.2. Telemarketing environments… 133
7.3. Meeting rooms… 136
7.4. Music schools… 138
7.5. Home theaters… 141
7.6. Auditoriums… 143
7.7. Industrial noise… 146
7.8. Open restaurants and bars… 147

8. ABOUT STUDIES
8.1. Radio studies (broadcasting)… 153
8.2. Tv studies… 156
8.3. Recording studios and/or joint trials… 161

9. CASE STUDY 1- CLASSROOM… 167
10. CASE STUDY 2- RADIO LOCUTION… 183

11. CASE EXAMPLE STUDY 1- RECORDING STUDIO… 189

12. CASE EXAMPLE STUDY 2- SMALL AUDITORIUM… 199

13. CASE EXAMPLE STUDY 3- RELIGIOUS TEMPLE… 207

14. CASE EXAMPLE STUDY 4- ISSUE OF URBAN NOISE… 219

15. CASE EXAMPLE STUDY 5- ISSUE OF NOISE IN RURAL AREA… 229

16. BIBLIOGRAPHY… 237

Comments About The First Edition

I like Regio Paniago´s book, one of the books that I use in my Acoustic Comfort Class taught at the Faculty of Architecture and Urbanism – UNIEURO ( Euro-American University Centre ), it is good to read , in clear language , well organized and illustrations with graphic quality. Practical, first of all, demystifies the acoustics for bringing the day to day problems of the architect and engineer, musician, among others, constituting an interesting source of information.

Dr. Miriam Nardelli, Architect (UnB-DF)
studiumarquitetura@gmail.com

 

The book Architectural Acoustics presents the acoustic concepts in an objective text, which is clear and in a sequence of easy understanding for the student . The architect Régio Paniago Carvalho managed to convey the acoustic bases without recourse to complex mathematical formulas , making the book accesible to beginners in the world of acoustics. In addition, it presents specific architectural situations with recommendations for conducting and adequate acoustic design . This book has been a source of consultation for the realization of our acoustic projects , as well as serving as a base for the creation of our distance learning course ” Acoustics – fundamentals and concepts.”

Dr. Vitor Litwinczik, Engineer. (UFSC-SC)
Consultant of SOBRAC – Brazilian Society of Acoustics
Partner-director of Anima Acústica – Tecnologia e Conhecimento, Florianópolis – SC
www.animacustica.com.br / vitor@animacustica.com.br

 

It is a pleasure to comment on the book Architectural Acoustics from my personal friend and fellow in 30-year journey , architect Régio Paniago , the highest quality work both with regard to the theoretical precepts as to the range of sound absorption coefficients of various materials cited in it. I suggest this work not only for professionals but also for students of architecture and engineering. Congratulations on this very valuable work for all of us.

José Alberto Porto da Cunha Lobo, Engineer (UGF-RJ)
Effective Member of SOBRAC – Brazilian Society of Acousics
Partner-director of Implante de Acústica, Brasília – DF
www.implanteacustica.com.br / lobo@implanteacustica.com.br

 

This book came to fill the gap of such few publications on architectural acoustics in Brazil. In the constant search for a new lifestyle with comfort and well-being, this material shows its great value for ACKOUSTIK, assisting in the solutions of the work of our company. The book deals with the issue properly, guiding to avoid future problems and raise awareness of citizens.

Ivon Lopes Franco
Partner- director of ACKOUSTIK – Acoustics and Projects, Brasília – DF
www.ackk.com.br / ack@ackk.com.br

 

Architectural Acoustics – comment on the first edition of the book, published on the internet site www.nosrevista.com.br on 14/02/2008 : “This is the best acoustics book I have ever read in my life . Congratulations to the architect … “

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