paper - Odeon

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T(30) (s) EDT (s) The T 30 value in Figure 10 shows a standard deviation of 0,02 seconds (0.2 JND) at 1000 Hz, increasing to 0.09 seconds at 125 Hz so it only varies little with position and should be easy to reproduce even if position is not exact. This agrees with the idea that T 30 should be a global value that relates to the room not to a local position. All other parameters do show larger deviations and with some increases in deviations towards lower frequencies. The standard deviation for the other parameters are however not as big as one may think when visually inspecting the graphs. At 1000 Hz none of parameters have a standard deviation larger than 0.7 when normalized to Just Noticeable Differences (JND) and even at 125 Hz all parameters except SPL (the G value obtained with a source power of 31 dB) have a standard deviation less than 1.2 JND’s. Statistics Active receivers: 5,10,11,12,13,14,15 2 1,8 1,6 1,4 1,2 1 gfedcb gfedcb gfedcb gfedcb gfedcb gfedcb gfedcb gfedcb Simulated Avr. Simulated Min Simulated Max Simulated Std. dev. Measured Avr. Measured Min Measured Max Measured Std. dev. 0,8 0,6 0,4 0,2 0 125 250 500 1000 2000 4000 Frequency Odeon©1985-2013 Licensed to: Odeon Figure 9: Uncertainty of position. Statistics on early decay time, EDT. Statistics Active receivers: 5,10,11,12,13,14,15 1,9 1,8 1,7 1,6 1,5 1,4 1,3 1,2 1,1 1 0,9 0,8 0,7 0,6 0,5 0,4 0,3 0,2 0,1 gfedcb gfedcb gfedcb gfedcb gfedcb gfedcb gfedcb gfedcb Simulated Avr. Simulated Min Simulated Max Simulated Std. dev. Measured Avr. Measured Min Measured Max Measured Std. dev. 125 250 500 1000 2000 4000 Frequency Odeon©1985-2013 Licensed to: Odeon Figure 10: Uncertainty of position. Statistics on reverberation time, T 30 . 16
Ts (ms) SPL (dB) Statistics Active receivers: 5,10,11,12,13,14,15 18 17 16 15 14 13 gfedcb gfedcb gfedcb gfedcb gfedcb gfedcb gfedcb gfedcb Simulated Avr. Simulated Min Simulated Max Simulated Std. dev. Measured Avr. Measured Min Measured Max Measured Std. dev. 12 11 10 9 8 125 250 500 1000 2000 4000 Frequency Odeon©1985-2013 Licensed to: Odeon Figure 11: Uncertainty of position. Statistics on sound strength, SPL. Statistics Active receivers: 5,10,11,12,13,14,15 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 125 250 500 1000 2000 4000 Frequency Odeon©1985-2013 Licensed to: Odeon gfedcb gfedcb gfedcb gfedcb gfedcb gfedcb gfedcb gfedcb Simulated Avr. Simulated Min Simulated Max Simulated Std. dev. Measured Avr. Measured Min Measured Max Measured Std. dev. Figure 12: Uncertainty of position. Statistics on gravity time, Ts. 17
Page 1 and 2: Toronto, Canada International Sympo
Page 3 and 4: Table 1: Room Acoustic Parameters i
Page 5 and 6: scattering coefficients have been a
Page 7 and 8: prediction of C 80 it is important
Page 9 and 10: SPL(dB) can be some influence from
Page 11 and 12: is used for separating multiple imp
Page 13 and 14: p x E-1 Impulse response recordings
Page 15: SPL / Noise (dB) an indicator wheth
Page 19 and 20: 4.3 Different excitation stimuli Fo
Page 21 and 22: R3 at 4,55 m R2 at 6,84 m R5 at 8,9
Page 23 and 24: In Figure 16 measured and simulated
Page 25 and 26: 6 CONCLUSIONS It is possible to mak

paper - Odeon

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