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Applied Acoustics - In Class test - 22/12/2017
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N.TimestampEmail addressSurname and NameMatriculaScoreBonusTot.Score1) Compute the value of Leq at the end of a measurement, during which the SPL was 60+F dB(A) for 1+D hours and 65+E dB(A) for 2+C/3 hours2) Compute the SPL inside a room having a volume V=300+D*20 m³, a reverberation time of 1+F/10s, where the receiver is at the critical distance from a point source having an Lw=90+E dB.3) Compute the total SPL in dB(A) of a pink spectrum in octave bands ranging between 31 Hz and 16 kHz (10 octave bands). The SPL in each octave band is 60+F dB.4) In a standing wave tube the values of pmax and pmin are respectively 1+F/10 Pa and 0.2+E/50 Pa. Compute the value of the apparent sound absorption coeff. α of the sample placed at the end of the tube.5) Check the sentences you think are TRUE6) What's the decay rate with distance for a point-like source ? 7) What's the decay rate with distance for a line source ?
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112/22/2017 17:18:05
stefano.cavalli2@studenti.unipr.it
Cavalli Stefano2893413223467.0 dB(A)85.8 dB88.7 dB(A)0.647
The sound intensity level is always smaller or equal than the sound energy density level, The sound energy density level is the energetic average between sound pressure level and sound particle velocity level, The sound speed in air is proportional to the square root of temperature
6 dB / doubling distance3 dB / doubling distance
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212/22/2017 17:18:37
emanuele.pagliari@studenti.unipr.it
Emanuele Pagliari2584403723966.4 dB(A)85.2 dB67.2 dB(A)0.684
The sound intensity level is always smaller or equal than the sound energy density level, The sound energy density level is the energetic average between sound pressure level and sound particle velocity level, The sound speed in air is proportional to the square root of temperature
6 dB / doubling distance3 dB / doubling distance
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312/22/2017 17:21:18
riccardo.straccia@studenti.unipr.it
Straccia Riccardo2558143723964.7 dBA82.8 dB71.2 dBA0.469
The sound intensity level is always smaller or equal than the sound energy density level, The sound energy density level is the energetic average between sound pressure level and sound particle velocity level, The sound speed in air is proportional to the square root of temperature
6 dB / doubling distance3 dB / doubling distance
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412/22/2017 17:23:31
lorenzo.zaniboni@studenti.unipr.it
Lorenzo Zaniboni2585583723968.99 dB(A)88.5 dB75.2 dB(A)0.49
The sound intensity level is always smaller or equal than the sound energy density level, The sound energy density level is the energetic average between sound pressure level and sound particle velocity level, The sound speed in air is proportional to the square root of temperature
6 dB / doubling distance3 dB / doubling distance
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512/22/2017 17:24:19
alberto.bonici@studenti.unipr.it
Bonici Alberto2794593423669.5 dB(A)89 dB76.2 dB(A)0.47
The sound intensity level is always smaller or equal than the sound energy density level, The sound speed in air is proportional to the square root of temperature
6 dB / doubling distance3 dB / doubling distance
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612/22/2017 17:25:20
gianmarco.carraglia@studenti.unipr.it
Carraglia Gianmarco2898033223466.9 dB(A)81.49 dB70.2 dB(A)0.462
The sound intensity level is always smaller or equal than the sound energy density level, The sound energy density level is the energetic average between sound pressure level and sound particle velocity level, The sound speed in air is proportional to the square root of temperature
6 dB / doubling distance3 dB / doubling distance
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712/22/2017 17:27:08
jodi.oxoli@studenti.unipr.it
Oxoli Jodi2586703723968.41 dB(A)87.747 dB67.2 dB(A)0.757
The sound intensity level is always smaller or equal than the sound energy density level, The sound energy density level is the energetic average between sound pressure level and sound particle velocity level, The sound speed in air is proportional to the square root of temperature
6 dB / doubling distance3 dB / doubling distance
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812/22/2017 17:27:43
eleonora.oliosi@studenti.unipr.it
Oliosi Eleonora2574633723968.397 dB(A)88.321 dB70.2 dB(A)0.635
The sound intensity level is always smaller or equal than the sound energy density level, The sound energy density level is the energetic average between sound pressure level and sound particle velocity level, The sound speed in air is proportional to the square root of temperature
6 dB / doubling distance3 dB / doubling distance
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9CartaceoRiabova Kseniia3403469.3 dB(A)88.2 dB76.2 dB(A)0.461
The sound intensity level is always smaller or equal than the sound energy density level, The sound speed in air is proportional to the square root of temperature
6 dB / doubling distance3 dB / doubling distance
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10CartaceoToscani Andrea1037543703766.58 dB(A)87.02 dB71.17 dB(A)0.581
The sound intensity level is always smaller or equal than the sound energy density level, The sound energy density level is the energetic average between sound pressure level and sound particle velocity level, The sound speed in air is proportional to the square root of temperature
6 dB / doubling distance3 dB / doubling distance
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Wrong or mispelled measuring unit
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Comma instead of decimal point
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