Results

Results

6.13.1.4.1.1 SMALL ROOM

All data are measured in the same position using a custom made microphone.

We use the data from the sweep measurements since they have the best signal-to-noise ratio (SNR).

The MLS-based measurement results are also

F(Hz)	63	125	250	500	1000	2000	4000	8000	16000
snr(dB)	30.1	50.3	53.7	54.3	54.0	55.3	52.6	43.0	24.5
edr(dB)	44.6	57.9	60.3	66.2	69.1	68.8	69.3	61.6	39.8
EDT(s)	0.34	0.29	0.24	0.21	0.22	0.18	0.18	0.20	0.20
T30(s)	0.35	0.26	0.22	0.19	0.21	0.21	0.20	0.19	0.18
corr	-0.997	-0.995	-0.994	-0.992	-0.996	-0.998	-0.999	-0.998	-0.999
T20(s)	0.34	0.25	0.20	0.21	0.23	0.23	0.20	0.18	0.18
corr	-0.997	-0.991	-0.993	-0.979	-0.995	-0.996	-0.998	-0.998	-0.999
Tc(ms)	32	30	29	20	20	19	19	20	20
C50(dB)	6.7	10.8	12.1	11.5	13.0	14.1	13.5	14.5	11.7
C80(dB)	13.3	19.6	24.0	23.3	20.5	22.0	24.0	24.4	22.9
D50(dB)	93	93	94	94	95	96	96	97	100
G(dB)	50.4	55.2	54.6	50.0	45.1	44.0	42.3	37.1	108.0
STI	0.89	Rating:	Excellent
STIrMale	0.89	Rating:	Excellent
STIrFem	0.89	Rating:	Excellent
RASTI	0.89	Rating:	Excellent
%ALcons	1.4
MTI		0.86	0.89	0.88	0.88	0.90	0.90	0.90
MTF
0.63 Hz		0.997	0.998	0.998	0.998	0.998	0.998	0.999
0.80 Hz		0.996	0.997	0.997	0.997	0.998	0.998	0.998
1.00 Hz		0.993	0.996	0.995	0.995	0.996	0.996	0.997
1.25 Hz		0.990	0.993	0.992	0.993	0.994	0.994	0.995
1.60 Hz		0.984	0.989	0.988	0.989	0.990	0.991	0.991
2.00 Hz		0.975	0.983	0.981	0.983	0.985	0.985	0.987
2.50 Hz		0.962	0.975	0.971	0.973	0.977	0.978	0.979
3.15 Hz		0.942	0.961	0.955	0.959	0.965	0.965	0.968
4.00 Hz		0.912	0.939	0.930	0.936	0.946	0.946	0.950
5.00 Hz		0.872	0.910	0.897	0.905	0.920	0.920	0.924
6.30 Hz		0.816	0.867	0.850	0.862	0.883	0.882	0.887
8.00 Hz		0.743	0.809	0.790	0.803	0.833	0.829	0.832
10.00 Hz		0.662	0.741	0.729	0.737	0.774	0.768	0.764
12.50 Hz		0.572	0.661	0.679	0.660	0.704	0.697	0.679
r(m)	60.8

6.13.1.4.1.1.1 MLS-based measurements

Here is data from the other measurements. Do not use these for the comparison.

6.13.1.4.1.1.1.1 MLS Measurement 1

Here we see that data in the upper and lower band is not valid (red color).

F(Hz)	63	125	250	500	1000	2000	4000	8000	16000
snr(dB)	11.6	27.7	29.6	22.6	26.5	25.5	25.0	23.8	12.3
edr(dB)	28.6	43.1	44.1	37.2	41.9	41.0	42.9	40.9	29.4
EDT(s)	0.24	0.29	0.22	0.15	0.19	0.19	0.18	0.17	0.17
T30(s)	0.38	0.26	0.24	0.23	0.21	0.20	0.19	0.19	0.15
corr	-0.989	-0.991	-0.992	-0.997	-0.995	-0.999	-0.999	-0.995	-0.999
T20(s)	0.41	0.27	0.23	0.22	0.21	0.21	0.19	0.17	0.15
corr	-0.992	-0.987	-0.977	-0.995	-0.987	-0.996	-0.998	-0.994	-0.999
Tc(ms)	26	30	22	13	14	13	12	12	12
C50(dB)	6.5	10.2	14.5	16.9	15.6	16.2	15.9	19.0	15.7
C80(dB)	15.2	17.5	24.8	24.9	23.4	25.1	26.8	26.9	29.5
D50(dB)	108	91	96	98	97	98	98	99	99
G(dB)	-35.7	-31.1	-33.9	-37.5	-41.5	-44.7	-46.2	-50.7	20.3
STI	0.89	Rating:	Excellent
STIrMale	0.90	Rating:	Excellent
STIrFem	0.90	Rating:	Excellent
RASTI	0.91	Rating:	Excellent
%ALcons	1.3
MTI		0.84	0.89	0.91	0.90	0.89	0.90	0.92
MTF
0.63 Hz		0.997	0.998	0.999	0.998	0.998	0.998	0.999
0.80 Hz		0.995	0.997	0.998	0.998	0.997	0.998	0.998
1.00 Hz		0.992	0.996	0.997	0.996	0.996	0.996	0.997
1.25 Hz		0.988	0.993	0.995	0.994	0.993	0.994	0.996
1.60 Hz		0.981	0.990	0.992	0.991	0.990	0.991	0.993
2.00 Hz		0.971	0.984	0.988	0.986	0.984	0.986	0.989
2.50 Hz		0.956	0.976	0.981	0.979	0.976	0.979	0.984
3.15 Hz		0.933	0.963	0.971	0.968	0.963	0.967	0.975
4.00 Hz		0.897	0.943	0.955	0.950	0.942	0.949	0.960
5.00 Hz		0.851	0.916	0.934	0.925	0.914	0.924	0.940
6.30 Hz		0.787	0.878	0.903	0.890	0.874	0.887	0.910
8.00 Hz		0.704	0.825	0.861	0.840	0.818	0.836	0.866
10.00 Hz		0.615	0.762	0.812	0.780	0.753	0.775	0.811
12.50 Hz		0.514	0.687	0.750	0.705	0.677	0.705	0.739
r(m)	0.0

6.13.1.4.1.1.1.2 Measurement 2

F(Hz)	63	125	250	500	1000	2000	4000	8000	16000
snr(dB)	10.9	28.3	34.5	31.7	30.1	30.2	26.4	24.4	12.0
edr(dB)	26.2	53.4	48.4	45.2	45.0	45.5	44.4	41.4	28.7
EDT(s)	0.23	0.25	0.19	0.18	0.20	0.17	0.17	0.18	0.18
T30(s)	0.32	0.26	0.24	0.22	0.21	0.19	0.18	0.20	0.17
corr	-0.992	-0.986	-0.989	-0.992	-0.997	-0.998	-0.999	-0.998	-0.998
T20(s)	0.33	0.27	0.20	0.21	0.21	0.20	0.18	0.19	0.17
corr	-0.992	-0.993	-0.989	-0.988	-0.995	-0.997	-0.998	-0.997	-0.999
Tc(ms)	23	25	21	15	15	13	13	12	13
C50(dB)	4.7	11.1	17.1	14.1	15.2	16.8	15.9	17.0	17.2
C80(dB)	12.2	19.4	23.9	25.1	23.8	25.6	26.2	25.8	28.7
D50(dB)	124	92	97	97	97	98	98	98	98
G(dB)	-35.9	-31.9	-33.7	-37.9	-41.6	-43.6	-45.7	-51.0	20.1
STI	0.89	Rating:	Excellent
STIrMale	0.90	Rating:	Excellent
STIrFem	0.90	Rating:	Excellent
RASTI	0.90	Rating:	Excellent
%ALcons	1.3
MTI		0.85	0.90	0.89	0.89	0.91	0.90	0.91
MTF
0.63 Hz		0.997	0.998	0.998	0.998	0.998	0.998	0.999
0.80 Hz		0.995	0.998	0.997	0.997	0.998	0.998	0.998
1.00 Hz		0.992	0.996	0.995	0.996	0.996	0.996	0.996
1.25 Hz		0.988	0.994	0.993	0.994	0.994	0.994	0.995
1.60 Hz		0.982	0.991	0.989	0.990	0.991	0.991	0.992
2.00 Hz		0.972	0.986	0.983	0.985	0.987	0.986	0.987
2.50 Hz		0.957	0.979	0.975	0.976	0.979	0.979	0.980
3.15 Hz		0.935	0.968	0.961	0.963	0.968	0.967	0.970
4.00 Hz		0.901	0.951	0.940	0.943	0.951	0.948	0.953
5.00 Hz		0.858	0.927	0.911	0.916	0.927	0.923	0.930
6.30 Hz		0.800	0.893	0.870	0.876	0.892	0.885	0.896
8.00 Hz		0.729	0.845	0.814	0.821	0.844	0.831	0.848
10.00 Hz		0.655	0.785	0.751	0.756	0.788	0.767	0.790
12.50 Hz		0.579	0.710	0.682	0.677	0.721	0.691	0.718
r(m)	0.0

6.13.1.4.1.2 Large room

6.13.1.4.1.2.1 Upper postion:

Use the MLS measurement, the 63 Hz octave is not valid. (There was an error with sweep measurements so it could not be used.)

F(Hz)	63	125	250	500	1000	2000	4000	8000	16000
SNR(dB)	14.93	48.82	55.10	53.20	47.73	47.21	45.34	44.45	38.08
EDT(s)	2.23	0.80	0.67	0.74	1.06	1.04	0.89	0.71	0.56
T30(s)	2.88	0.95	0.82	0.89	0.98	0.98	0.92	0.76	0.66
T20(s)	2.88	0.82	0.80	0.90	1.07	0.99	0.90	0.74	0.64
Tc(ms)	171.71	63.35	66.92	68.65	74.39	72.13	62.27	50.50	41.49
C50(dB)	-1.43	0.50	-2.08	-1.31	-0.17	0.48	1.06	2.43	4.07
D50(%)	43.23	51.93	38.59	42.08	49.09	52.78	56.04	63.68	72.12
G(dB)	-20.54	-17.23	-14.89	-18.25	-23.30	-24.55	-28.22	-32.22	46.31
ST1(dB)	5.09	5.83	10.57	7.98	5.85	5.97	6.38	6.09	5.46
STI	0.62
RASTI	0.61
r(m)	13.82

6.13.1.4.1.2.2 LeftPosFirstRow

Use MLS also here from 125 Hz, below it is not valid.

C:\WinMLS2000\Measurements\Surrey\LargeRoom\MLSLeftPosFirstRow.wmb

F(Hz)	63	125	250	500	1000	2000	4000	8000	16000
SNR(dB)	22.63	48.79	52.42	53.40	49.11	47.70	44.21	44.15	38.92
EDT(s)	1.05	0.90	0.89	0.93	1.00	0.95	0.85	0.66	0.52
T30(s)	1.77	0.93	0.66	0.85	0.98	0.99	0.93	0.74	0.65
T20(s)	1.77	0.95	0.68	0.88	1.01	0.96	0.90	0.72	0.60
Tc(ms)	90.00	72.50	77.62	65.40	74.56	70.95	61.32	40.19	30.91
C50(dB)	2.16	0.93	-2.72	0.35	-0.56	-0.24	0.89	4.08	5.62
D50(%)	61.07	56.54	34.72	51.26	47.19	48.50	55.23	72.07	79.84
G(dB)	-18.27	-17.57	-14.05	-18.24	-24.02	-24.62	-28.32	-30.45	48.58
ST1(dB)	5.85	5.23	12.24	4.18	5.46	4.94	5.32	2.08	0.49
STI	0.61
RASTI	0.59
r(m)	10.22

6.13.1.4.1.2.3 CentrePosThirdRow

Use MLS also here from 125 Hz, below it is not valid.

F(Hz)	63	125	250	500	1000	2000	4000	8000	16000
SNR(dB)	32.36	47.75	51.20	52.32	47.00	46.05	44.36	44.48	38.50
EDT(s)	1.36	0.52	0.69	0.86	0.99	1.05	0.94	0.71	0.53
T30(s)	1.81	1.04	0.74	0.87	1.01	1.01	0.93	0.77	0.67
T20(s)	1.81	1.01	0.73	0.87	0.98	1.01	0.93	0.77	0.64
Tc(ms)	102.05	51.26	63.71	68.39	67.70	64.19	57.63	40.21	29.81
C50(dB)	0.63	5.26	1.49	-0.15	1.00	1.19	1.78	4.01	6.05
D50(%)	65.10	76.84	57.58	50.17	56.12	56.69	60.09	71.52	80.55
G(dB)	-17.61	-15.60	-13.41	-18.15	-23.43	-24.87	-28.57	-31.61	47.51
ST1(dB)	3.06	9.22	14.29	4.44	5.57	3.47	2.84	1.25	-0.07
STI	0.65
RASTI	0.60
r(m)	11.41