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Applied Acoustics Course - A.Y. 2013/2014 |
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Course
Calendar with link to PPT presentations, AVI audio-video recordings and
DOC notes |
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N. |
Date |
Time |
Topic |
Presentations |
Recordings |
Notes |
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0 |
04/10/2013 |
14.30-15.40 |
Course introduction, program, web page Angelo Farina |
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 |
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1 |
04/10/2013 |
15.50-16.50 |
Nature of sound, fundamental physical quantities |
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2 |
04/10/2013 |
17.00-18.00 |
Energy & Sound, scale of decibels |
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3 |
11/10/2013 |
14.30-15.40 |
Human auditory system, loudness evaluation, weighting curves |
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4 |
11/10/2013 |
15.50-16.50 |
The Sound Level Meter, equivalent level,
calibration |
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5 |
11/10/2013 |
17.00-18.00 |
Sum
and subtraction of values in dB,
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6 |
18/10/2013 |
14.30-15.40 |
Free Field sound propagation, point sources, spherical divergence, directivity |
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7 |
18/10/2013 |
15.50-16.50 |
Linear sources,
cylindrical divergence, excess attenuation |
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8 |
18/10/2013 |
17.00-18.00 |
Noise screens, Maekawa formulas, examples |
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9 |
25/10/2013 |
14.30-15.40 |
Indoor sound
propagation, semi-reverberant field, critical distance |
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10 |
25/10/2013 |
15.50-16.50 |
Reverberation
time, definition and Sabine's formula |
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11 |
25/10/2013 |
17.00-18.00 |
Environmental
correction factor K2, sound propagation inside not-Sabinian
rooms. |
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12 |
08/11/2013 |
14.30-15.40 |
Digital sampling of sound, digital filters, FFT, convolution in time and frequency domain |
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13 |
08/11/2013 |
15.50-16.50 |
Measurement of impulse response: impulsive sources, microphones |
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14 |
08/11/2013 |
17.00-18.00 |
Measurement of impulse response: loudspeakers, MLS and ESS methods |
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15 |
15/11/2013 |
14.30-15.40 |
ISO3382 standard, acoustical parameters: T20, T30, EDT, Clarity, Definition, Center Time, IACC, Jlf, G |
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16 |
15/11/2013 |
15.50-16.50 |
Speech Transmission Index: measurement and calculation |
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17 |
15/11/2013 |
17.00-18.00 |
Sound absorbing materials, typical products. Example of measurement of Alpha Sabine according to ISO 354 (reverberant room) |
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18 |
22/11/2013 |
14.30-15.40 |
Sound insulating materials, typical products. Frequency dependence of the Sound Reduction Index R, the Mass law, resonances and coincidence. |
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19 |
22/11/2013 |
15.50-16.50 |
Italian law about building acoustics (DPCM 5/12/1997), experimental assessment of compliance |
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20 |
22/11/2013 |
17.00-18.00 |
Italian law about environmental noise (L. 447/1995), acoustical zoning, the new EC standards based on Lden |
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21 |
29/11/2013 |
14.30-15.40 |
The Single Event Level (SEL) and its usage for evaluation of transportation noise |
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22 |
29/11/2013 |
15.50-16.50 |
Examples and exercises
regarding environmental noise |
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23 |
29/11/2013 |
17.00-18.00 |
Examples and exercises
regarding noise at the workplace |
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24 |
06/12/2013 |
14.30-15.40 |
Digital Sound Processing, FIR and IIR filters, FFT, aliasing, windows, spectrogram |
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25 |
06/12/2013 |
15.50-16.50 |
Computation of FIR coefficients for inverse filters, the Kirkeby inversion, Auralization by convolution |
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26 |
13/12/2013 |
14.30-15.40 |
Measurement of
the absorption coefficient: reverberant room, standing wave tube, sound
intensity method, impulsive method |
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27 |
13/12/2013 |
15.50-16.50 |
Techniques employed for sound recording and reproduction, mono, stereo, multichannel, 3D, the Soundfield microphone, Ambisonics |
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28 |
13/12/2013 |
17.00-18.00 |
Wave Field Synthesis (WFS), loudspeaker arrays, the Casa del Suono lab in Parma |
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29 |
20/12/2013 |
14.30-15.40 |
Simulation of sound propagation outdoors employing the DISIA/CITYMAP software package |
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30 |
20/12/2013 |
15.50-16.50 |
Simulation of sound propagation indoors employing the RAMSETE/AURORA software package |
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33 |
xx/01/2014 |
09.00-13.00 |
Lab Experiments
about impulse response measurements with Aurora |
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34 |
xx/01/2014 |
09.00-13.00 |
Lab Experiments
about computer simulation of sound inside a room with Ramsete
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35 |
x/01/2014 |
09.00-13.00 |
Lab Experiments about computer simulations of sound propagation outdoors with DISIA package. |
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Legenda:
|
1-23 |
Lessons followed both by students of
Engineering (6 CFU) and by students of Techniques of Prevention (3 CFU) |
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24-31 |
Lessons followed by students of
Engineering (6 CFU) only |
|
32-34 |
Lab sessions, mandatory for students
who want to make their Thesis in Applied Acoustics |
Copyright (C) Angelo Farina – all the material posted here cannot be
reproduced or broadcasted without authorization.
Last revision: 20 October 2013