Building & Architectural Acoustics Building & Architectural Acoustics

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<strong>Building</strong> Acoustic Measurement Tasks… But also… troubleshooting noise problems (FFT – sound and vibration), assessing noise levels relative to the purpose of the room (Noise Criteria, EDT, Speech Intelligibility, etc.) and occasionally using sound-intensity to identify leaks and noise sources. www.bksv.com, 71 Types of Measurement A S T M S T D • Airborne sound insulation ............ • Impact sound level …… • Facade insulation ............................. • Installation noise ..... • Reverberation time ........................... www.bksv.com, 72 36
Airborne Sound Insulation - Measurements Source Room Receiving Room Room 1 Room 2 Source Room Level .......................... L1 T2 B2 .......Background Noise Level L2 ...............Receiving Room Level .......................Reverberation Time Partition www.bksv.com, 73 Calculating sound insulation Example: Sound Transmission Loss S is partition area S B2 L1 L2 V T2 V is Receiving Room volume Sound Transmission Loss R = L1 - L2(B2) + 10 log(ST/0.16V) R dB ... this is a 1/3 octave Transmission Loss (TL) spectrum (without the Absorption correction it is called a Noise Reduction (NR) Spectrum) www.bksv.com, 74 37
Page 1 and 2: Building & Architectural Acoustics
Page 3 and 4: Interior Sound Levels • A-weighte
Page 5 and 6: Now ready, set, go! Reverberation!
Page 7 and 8: What makes a Good Listening Room
Page 9 and 10: Let’s try a simple measurement wi
Page 11 and 12: Impulse - Pistol Shot Time www.bksv
Page 13 and 14: Impulse Response the natural way Pr
Page 15 and 16: What is DIRAC • Dual Input Room
Page 17 and 18: Room Acoustic Standards • Room Pa
Page 19 and 20: Room Acoustic Parameters - Graphs (
Page 21 and 22: 3D Graphs - CSD Spectrogram (Time S
Page 23 and 24: Calculated Results - Measurement Pa
Page 25 and 26: Tools to improve your room acoustic
Page 27 and 28: ODEON Results - Auralization Flutte
Page 29 and 30: ODEON School Project Original Acous
Page 31 and 32: A bit of terminology • Noise redu
Page 33 and 34: Cavity Resonances www.bksv.com, 65
Page 35: Isolation Between Spaces • Regula
Page 39 and 40: Instrument Requirements Investigato
Page 41 and 42: New for Euronoise 2009 • Introduc
Page 43 and 44: BZ5503 - Archive results as normal
Page 45 and 46: Combine Results www.bksv.com, 89 Ex
Page 47 and 48: Let’s take a tour… www.bksv.com

Building & Architectural Acoustics Building & Architectural Acoustics

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