(A) EN 352-1:2002 / EN 352-3:2002
MT7H79A*, MT7H79B*, MT7H79F*, HT*79A*, HT*79F*, HT*79B*
EN 352-1:2002
A:1 Frequency (Hz)
125
250
500
1000 2000 4000 8000 SNR
A:2 Mean attenuation (dB)
17.7
27.1
33.8
38.1
36.2
33.6
37.1
33
A:3 Standard deviation (dB)
2.9
2.1
2.4
2.6
2.3
2.5
2.2
A:4 APV (dB)
14.8
25.0
31.4
35.5
33.9
31.1
34.9
H = 33 dB, M = 32 dB, L = 24 dB
MT7H79P3E*,
HT*79P3*
EN
352-1:2002
A:1 Frequency (Hz)
125
250
500
1000 2000 4000 8000 SNR
A:2 Mean attenuation (dB)
17.2
26.4
33.9
37.2
35.4
33.2
37.0
32
A:3 Standard deviation (dB)
3.1
2.5
2.7
2.3
2.6
2.4
2.0
A:4 APV (dB)
14.1
23.9
31.2
34.9
32.8
30.8
35.0
H =33 dB, M = 31 dB, L = 23 dB
MT7*H540F*
EN
352-1:2002
A:1 Frequency (Hz)
125
250
500
1000 2000 4000 8000 SNR
A:2 Mean attenuation (dB)
18.9
24.4
32.7
35.3
33.3
41.0
49.4
33
A:3 Standard deviation (dB)
2.3
1.8
1.7
2.6
2.7
3.0
3.2
A:4 APV (dB)
16.6
22.6
31.0
32.7
30.6
38.1
36.2
H =33 dB, M = 31 dB, L = 24 dB
MT7*H540P3E*
EN
352-3:2002
A:1 Frequency (Hz)
125
250
500
1000 2000 4000 8000 SNR
A:2 Mean attenuation (dB)
17.9
23.3
34.0
35.8
31.5
40.5
36.5
31
A:3 Standard deviation (dB)
3.3
3.6
4.2
2.9
3.0
4.7
4.0
A:4 APV (dB)
14.6
19.7
29.8
32.9
28.5
35.8
32.5
H =31 dB, M = 29 dB, L = 21 dB
(B) ANSI S3.19-1974
MT7*H540P3E*
ANSI
S3.19-1974
B:1 Test Frequency (Hz)
125
250
500
1000 2000 3150 4000 6300 8000 NRR
CSA
Class
B:2 Mean attenuation (dB)
16.7
22.0
31.7
36.3
33.7
34.1
34.0
33.5
35.6
25
B:3 Standard deviation (dB)
2.7
2.3
2.6
2.3
2.1
2.1
2.9
3.2
3.7
B
MT7H79AB*
ANSI
S3.19-1974
B:1 Test Frequency (Hz)
125
250
500
1000 2000 3150 4000 6300 8000 NRR
CSA
Class
B:2 Mean attenuation (dB)
16.2
23.0
31.8
38.4
34.4
31.4
33.4
34.2
35.6
24
B:3 Standard deviation (dB)
3.1
2.5
3.0
3.8
3.3
3.3
2.3
3.3
2.7
B
MT7H79P3E* ANSI
S3.19-1974
B:1 Test Frequency (Hz)
125
250
500
1000 2000 3150 4000 6300 8000 NRR
CSA
Class
B:2 Mean attenuation (dB)
16.5
22.0
28.6
34.9
32.0
28.7
31.2
32.5
32.5
21
B:3 Standard deviation (dB)
3.7
3.2
3.6
4.4
3.5
2.9
3.2
3.4
4.1
B
MT7H79F*
ANSI
S3.19-1974
B:1 Test Frequency (Hz)
125
250
500
1000 2000 3150 4000 6300 8000 NRR
CSA
Class
B:2 Mean attenuation (dB)
17.9
23.9
34.4
40.3
36.1
31.3
33.1
32.5
35.4
25
B:3 Standard deviation (dB)
3.1
3.6
3.2
2.8
2.5
2.8
2.6
3.1
2.4
B
