Find values of reverberation time (T), early decay time (EDT), clarity (C80) and center time (Ts) from following impulse response.
c12.wav (RIFF waveform, 16 bit signed integer, monoral, sampling frequency: 48000 Hz)
c12.fb (floating-point binary (little endian), 524288 data, monoral, sampling frequency: 48000 Hz)
Note
This impulse response was measured in about 500m
3 of echoic room.
Reverberation Time: T (s)
|
125 |
250 |
500 |
1k |
2k |
4k |
Regression interval |
| Toyoda |
11.37 | 10.42 | 8.26 | 6.43 | 4.77 | 3.57 |
-5 ~ -35 dB (T30) |
| Okubo |
11.55 | 10.38 | 8.09 | 6.33 | 4.73 | 3.45 |
-5 ~ -35 dB (T30) |
| Miyazaki |
11.39 | 10.44 | 8.26 | 6.42 | 4.78 | 3.44 |
-5 ~ -35 dB (T30) |
Early decay time: EDT (s)
|
125 |
250 |
500 |
1k |
2k |
4k |
| Okubo |
10.53 | 10.15 | 8.12 | 6.08 | 4.59 | 3.13 |
| Miyazaki |
10.36 | 10.21 | 8.17 | 6.09 | 4.61 | 3.11 |
| Yairi |
10.10 | 9.88 | 8.08 | 6.23 | 4.48 | 3.39 |
Clarity: C80 (dB)
|
125 |
250 |
500 |
1k |
2k |
4k |
| Hoshi |
-8.99 | -8.75 | -10.35 | -7.59 | -6.49 | -3.60 |
| Miyazaki |
-9.11 | -8.62 | -10.25 | -7.80 | -6.41 | -3.69 |
Center time: Ts (s)
|
125 |
250 |
500 |
1k |
2k |
4k |
| Hoshi |
0.815 | 0.777 | 0.605 | 0.457 | 0.338 | 0.219 |
| Miyazaki |
0.812 | 0.778 | 0.614 | 0.460 | 0.338 | 0.223 |
| Yairi |
0.818 | 0.759 | 0.602 | 0.456 | 0.326 | 0.242 |