week 14b - Physics 1240 Thurs 4/14/2011 Today:...

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Physics 1240 Thurs 4/14/2011 Today : Reverberation and Sabine’s formula Next time : Human Voice Learning goals • Measure and determine the reverberation time • Assess the quality of the reverberation of a concert hall • Estimate the reverberation time using Sabine’s formula
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Median: 68 Mean:66 Curve: 80 and above A 68 and above B 56 and above C 48 and above D 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 20.00 22.67 25.33 28.00 30.67 33.33 36.00 38.67 41.33 44.00 46.67 49.33 52.00 54.67 57.33 60.00 62.67 65.33 68.00 70.67 73.33 76.00 78.67 81.33 84.00 86.67 89.33 92.00 94.67 97.33 100.00 Frequency Total PHYS 1240 PARKER EXAM II
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CQ 14.5 – A clarinet plays a note at 300 Hz with the register key hole closed. What would be the frequency of the note when the register key hole is opened? A) 150 Hz B) 600 Hz C) 900 Hz D) none of the above
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Octave Holes, register Holes octave hole here register hole here Also: When you “over blow” a fute-type instrument you go up an octave
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Deaf Architects and Blind Acousticians? -- Robert E. Apfel
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week 14b - Physics 1240 Thurs 4/14/2011 Today:...

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