graduate thesis seminar -...

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Graduate Thesis Seminar (Presenting your research)NING XIANG

GRADUATE PROGRAM IN ARCHITECTURAL ACOUSTICS, SOA

RENSSELAER POLYTECHNIC INSTITUTE, TROY, NEW YORK

Greene 204, Jan. 11th 2019

Program in Architectural Acoustics

Plan for Success

2

Do rigorous research More research more confidence

More research more passion

Know your audience Different event different audience

Regular attending conferences

Think of your audience


Plan for Success

3

Plan for time limit 45 min, … 15 min, 10 min, 7-5 min

Fit under the time limit

Use available technology Animations in PPT, video clips, sound samples, visual components

Basic components without them??

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Exact

Plane waveexcitation

300 Hz, 3 m(Degree)


Soundscape Augmentation

5 (http://symphony.arch.rpi.edu/~xiangn)

Binaurally augmented

Binaurally recorded C38

C37

C36

C32

C33

C34

C35

Dummy head


Plan for Success

6

Shaping a solid structure Logical, well-organized structure Introduction /Outline

Body: concise

Conclusion/summary: very sparse!!

Rehearsal / Practice In front of mirror, a group of friends

Should not memorize

Some like to film, some not

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Plan for Success

7

Presenter’s success Soft voice??Monotonic voice??

Looking back to screen all the time??

Looking at the screen all the time??Speech patterns:

Animated speaker


Legible Slides

8

Legible fonts, lines Legible in large distance

Choose easily legible fonts

Sufficiently larger line spacing

Which one of fonts: Legible in large distance

Legible in large distance


(Arial bold 36)

(Arial 36)

(Times New Roman 36)


Legibility in Large Distance

9

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Legibility in Large Distance

10


Legible Fonts

12

Research content more important than fonts

Not legible content Nothing!

Artistic slides Clear legibility

(Calibri 54)


Bad Line Spacing

13

Legible fonts, lines Legible in large distance Choose easily legible fonts Sufficiently large line spacing

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Good Line Spacing

14

Legible fonts, lines


Choose easily legible fonts

Sufficiently LARGER line spacing


Slide Background

15

Dark background:

artistic

cool

Disadvantages:

heavily replying on darkened room

switch-off light not always possible

making audience sleepy


Figures / Line Thickness

16

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Figures / Line Thickness

17

350 Hz3 m


Model and Data

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Bayesian estimation:

Mean pore size = 0.5 mm

Porosity = 0.3855

Tortuosity = 1.1665

Sds = 0.3827

Thickness = 40 mm

(known)

(http://symphony.arch.rpi.edu/~xiangn)


Parameter PriorsDepth 1(cm)

.58

.56

.57

Porosity 1(%)

1.46

1.51

1.562.09 2.182.14 Depth 1(cm

)

Depth 2(cm)

0.187 Thickness 2(mm

)

Diameter 2(mm)0.175

Two-layer MPPfrom experiment

Ways todeliver dense graphics

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Concise Slides

20

Key words rather full sentences

Slide title Key words only!

Avoid dense texts extending multiple lines

(unless delivering WORD by WORD)

Using animation (appear) to break long text


Immediate Rejection

21

Too poorly written to be understood

Outside the scope of the Journal

No sufficiently thorough literature study

Substantially similar work to others and

no clue how the work differs from others

Not a significant contribution to the journal literature



Abstract


Most scientists have to present important concepts, ideas and research progresses to others regularly, especially on scientific conferences. Effective presentation is one of the most important research skills — yet one many junior scientists don’t usually put a lot of effort into. This research methods seminar will provide some essential tools for learning to communicate more effectively. – N. Xiang

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Textural Remarks


We want our journal to be excellent and to be perceived as such by others outside our discipline as excellent. We want those who are stimulated to write for JASA to continue to be so stimulated and we do not want them to be discouraged by the Journal’s aspirations for a higher degree of excellence. Rather, we encourage them to join in what is in reality a large common endeavor with each of us prodding, pulling, and cheering the others along. e want others of kindred spirit to join us, we want them to also write excellent papers, and we want them to submit such papers to our journal.


Concluding Remarks


We want our journal to be excellent and to be perceived as such by others outside our discipline as excellent.

We want those who are stimulated to write for JASA to continue to be so stimulated and we do not want them to be discouraged by the Journal’s aspirations for a higher degree of excellence.


Concluding Remarks


Rather, we encourage them to join in what is in reality a large common endeavor with each of us prodding, pulling, and cheering the others along.

A. Pierce

We want others of kindred spirit to join us, we want them to also write excellent papers, and we want them to submit such papers to our journal.

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RPI Hall of Fame


Christopher Jaffe has been recognized internationally for his innovation and leadership in architectural design. Christopher Jaffe has been recognized internationally for his innovation and leadership in architectural design. Blending the worlds of art, architecture and technology, he has consulted on more than 250 performance halls, working directly with symphony orchestras and opera, dance, and theater companies worldwide.

Christopher Jaffe has been recognized internationally for his innovation and leadership in architectural design. Blending the worlds of art, architecture and technology, he has consulted on more than 250 performance halls, working directly with symphony orchestras and opera, dance, and theater companies worldwide.

Founder of the master’s program in architectural acoustics at Rensselaer, he is the recipient of the Year 2000 Honor for Collaborative Achievement Award from the American Institute of Architects and the Ellis Island Medal of Honor.

– Inducted 2003

Christopher Jaffe has been recognized internationally for his innovation and leadership in architectural design. Blending the worlds of art, architecture and technology, he has consulted on more than 250 performance halls, working directly with symphony orchestras and opera, dance, and theater companies worldwide.

Founder of the master’s program in architectural acousticsat Rensselaer, he is the recipient of the Year 2000 Honor for Collaborative Achievement Award from the American Institute of Architects and the Ellis Island Medal of Honor.

– Inducted 2003


Handling Tables

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# Log Evidence (Np)

1 ‐26723.3 ± 0.95

2 ‐1998.0 ± 1.39

3 348.5± 1.06

4 355.9 ± 0.88

5 359.1 ± 0.79

EvidenceLayer 1 2 3

(mm) 1.56 1.56 2.20

(mm) 0.25 0.202 0.203

(%) 9.02 4.91 2.16

(cm) 3.07 3.22 3.75

t

r

d

Parameters


Two Levels Inference

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)|(

)|()|()|(

i

iiiiii Hp

HpH,p,Hp

D

θθDDθ

);( iiH θParameter estimation:

)(

)()|()|(

D

DD

p

HpHpHp ii

i Model selection:

,1H ,2H ,3H Occam’s razorJasa & Xiang (JASA 2012)

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Exact Helmholtz Solution

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Neumann condition:

0

0)1(

00 coscos)()(l

lll rkHrkJIi

ull

rr 0

0rr

0rr

Plane wave excitation:

00

20

)1(00 coscos)()(

lll

j

l rkJerkHIi

ul

l

/ll

5.00 121

Amplitude [ exp() Bessel cos cos ]Series of ... .


Exact Solution: Single-Sided

30

Single-sidedillumination

00

Fornnnn

nn

nn

2cot

2

1

2cot

2

12

cot2

1

2cot

2

12

cot2

1

2cot

2

1

21

22

111

01 02

0 1 1st pair

2nd pair

3rd pair


Wave-Based Modelling

31

)(

1,)(

,)(1,

2

)(,1

)(,

)(,1

2

)1(,

)(,

)1(,

2

2

2

nji

nji

nji

nji

nji

nji

nji

nji

nji

ppp

ppp

ppp

Update equation:

x

tcx

2

2

2

22

2

2 ),,(),,(),,(

y

tyxp

x

tyxpc

t

tyxp

Wave equation:

y

tcy

Submission I Submission II

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Reference Style

32

1. W. C. Sabine, Collected Papers on Acoustics (Harvard University Press, Cambridge, 1922).

2. C. F. Eyring, Reverberation time in dead rooms, J. Acoust. Soc. Am. 168 (1930) 217‐241.

3. C. M. Harris, Application of wave theory of room acoustics to the design of auditoriums, Annals of Physics 192.1 (1989) 59‐65.

4. D. Botteldooren, “Finite‐difference time‐domain simulation of low‐frequency room acoustic problems, J. Acoust. Soc. Am. 98 (1995) 3302‐3308.

5. M. Aretz and M. Vorländer, Efficient modelling of absorbing boundaries in room acoustic FE simulations, Acta Acust. w. Acustica 96 (2010) 1042‐1050.

6. J. H. Rindel, The use of computer modeling in room acoustics, J. Vib. Eng. 3 (2000) 219‐224.

7. L. Savioja and U. P. Svensson, Overview of geometrical room acoustics modeling techniques, J. Acoust. Soc. Am. 138 (2015) 708‐730.

8. E. N. Wester and B. R. Mace, A statistical analysis of acoustical energy flow in two coupled rectangular rooms, Acta Acustica 84 (1998) 114‐121.

9. H. Kuttruff, Room Acoustics (Elseiver, New York, 1991).

10. J. Kang, Reverberation in rectangular long enclosures with diffusely reflecting boundaries, Acta Acust. w. Acustica 88 (2002) 77‐87.

11. H. Zhang, Relaxation of sound fields in rooms of diffusely reflecting boundaries and its application in acoustical radiosity simulation, J. Acoust. Soc. Am. 119 (2006) 2189–2200.

12. F. Ollendorff, Statistical room‐acoustics as a problem of diffusion: a proposal, Acustica 21 (1969) 236–245.

13. V. Valeau, J. Picaut and M. Hodgson, On the use of a diffusion equation for room‐acoustic prediction, J. Acoust. Soc. Am. 119.3 (2006) 1504‐1513.

14. A. Billon, V. Valeau, A. Sakout and J. Picaut, On the use of a diffusion model for acoustically coupled rooms, J. Acoust. Soc. Am. 120.4 (2006) 2043‐2054.

15. Y. Jing and N. Xiang, On boundary conditions for the diffusion equation in room acoustic prediction: theory, simulations, and experiments, J. Acoust. Soc. Am. 123.1 (2008a) 145‐153.

16. Y. Jing, E. Larsen and N. Xiang, One‐dimensional transport equation models for sound energy propagation in long spaces: theory, J. Acoust. Soc. Am. 127 (2010) 2312‐2322.

17. Y. Jing and N. Xiang, One‐dimensional transport equation models for sound energy propagation in long spaces: simulations and experimental results, J. Acoust. Soc. Am. 127 (2010) 2323‐2331.

18. T. Polles, J. Picaut, M. Berengier and C. Bardos, Sound field modeling in a street canyon with partially diffusely reflecting boundaries by the transport theory, J. Acoust. Soc. Am.116 (2004) 2969‐2983.

19. J. M. Navarro, F. Jacobsen, J. Escolano and J. J. L´opez, A theoretical approach to room acoustic simulations based on a radiative transfer model, Acta acust. w. Acustica 96 (2010) 1078‐1089.


At the End

A complete list??


Reference Style


At the End Show a complete list: NO!

J. Escolano, J. M. Navarro and J. J. López, On the limitation of a diffusion equation model for acoustic

predictions of rooms with homogeneous dimensions, Letter to the Editor, Journal Acoustical Society of

America 128(4), 1586‐1589 (2010).

During presentation flow Fully complete citation?

Author (Journal, year):Escolano, et.al. (JASA 2010)


Upcoming Conferences

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Zaman, K. et al.: Cognitive loads in noise, JASA 144 (2019)

Weikel, S. et al.: Spherical harmonics, JASA 144 (2019)

Savino A. et al.: Acoustic goniometer, JASA 144 (2019)

Miller, M. et al.: Aerogel bending waves, JASA 144 (2019)

Hoeft, M. et al.: Microslit panels, JASA 144 (2019)

Ritchie, K. et al.: Porous media inversion, InterNoise 2019

Weikel, S. et al.: Spherical mic arrays, InterNoise 2019(http://symphony.arch.rpi.edu/~xiangn)

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Upcoming Conferences


178th ASA Meeting, San Diego, CA, 2‐6 Dec. 2019

23rd International Congress on Acoustics, Aachen, GermanySept. 9‐13, 2019


Strong Start and End

36

Attractive Start

• Unusual

• Sense of humor

• Story‐telling

Unforgettable Ending

• 1‐2 take‐home messages

• Unforgettable


Young Presenters

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Organization

Visual/Graphics

Presentation skills

Content

Originality of Concept

Quality of Work

Significance of Project

Technical Committee onArchitectural Acoustics

Description of the problem

Originality of solution

Understanding of results

Quality of slides, graphics

Verbal/written clarity

Handling of questions

Overall organization

Technical Committee onSignal Processing in Acoustics

Engagement of audience

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RPI Architectural Acoustics

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Having been around ~20 years• Reputation by excellence of grad students

• Active faculty

• High visibility

Branding ??• Unified presentation template

• Affiliation: Graduate Program in Architectural

Acoustics, School of Architecture, RPI


Your Success Ours

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Tay, D. et al.: High‐resolution room scanning, ASA Meeting in Minneapolis, MN 2018

1st PrizeThe Student Paper Awardin Architectural Acoustics


Concluding Remarks


We want you to conduct excellent research

We want you to present excellently@ our school

@ job interview

@ national/ intl. conferences

We want you to bring honor back

graduate thesis seminar -...

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