Building & Architectural Acoustics Building & Architectural Acoustics

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Calculating sound insulation: weighting Read result STC at 500 Hz NRdB Place weighting curve to make sum of Deficiencies < 32dB (1band < 8dB) Reference curve 500Hz Hz STC: Weighted Sound Transmission Class - single number, e.g. 52 dB www.bksv.com, 75 Impact Sound Level - Measurements Similar to Airborne, except: • L1 is not measured • Tapping machine is used Source Room Receiving Room Room 1 Room 2 Tapping Machine ................ B2 ......Background Noise Level L2 .............Receiving Room Level T2......................Reverberation Time ..............Used only for T2 www.bksv.com, 76 38
Instrument Requirements Investigator Type 2260D <strong>Building</strong> <strong>Acoustics</strong> Software BZ7204 • Pink and white noise generator • Measure – 1/3 and 1/1 octave bands (depending on standard) – level and reverberation time spectra • Calculation and display of...... – Average of positions – Sound reduction spectra (R’, DnT, NR, FTL....) – Weighted indices (R’w, DnTw, NIC, FSTC,.....) – Reverberation Time and Decay Curves • ....according to the following standards – ISO, SS, DIN, ÖNORM, BS, Sia, UNI, NF, UNE, NEN, ASTM The 2260 Investigator has it all www.bksv.com, 77 Now the 2250 and 2270 have it all, too! • Single (BZ7228) or Dual Channel Applications available (BZ7229) • Single Channel on 2250 or 2270; Dual Channel on Type 2270 ONLY • Systems and kits (add-ins) available • Same accessory and cables as Type 2260D building acoustics systems • With a few advantages… www.bksv.com, 78 39
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 and 36: Isolation Between Spaces • Regula
Page 37: Airborne Sound Insulation - Measure
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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