radio production studio for spoken word | GK 0 to GK 10 |
studio for symphonic music | GK 5 |
studio for chamber music | GK 0 |
studio for pop music, etc. | GK 15 |
room for sound post production | GK 5 to GK 15 |
post production rooms | GK 10 to GK 20 |
office-like studio rooms | GK 20 to GK 25 |
technical rooms | NR 30 to NR 35 |
Standard: | GK0 | GK5 | GK10 | GK15 | GK20 | GK25 | NR30 | NR35 | NR40 | NR45 | ||
Level dB(A): | 14 | 18 | 22 | 26 | 30 | 34 | 39 | 44 | 48 | 53 | ||
Frequency | Hearing Threshold Level | GK Standard, Level | ||||||||||
Hz | dB | dB | ||||||||||
50 | 44 | 34 | 39 | 42 | 46 | 50 | 54 | 58 | 63 | 67 | 72 | |
63 | 38 | 29 | 33 | 37 | 41 | 45 | 49 | 53 | 58 | 62 | 66 | |
80 | 32 | 25 | 29 | 33 | 37 | 41 | 45 | 50 | 54 | 58 | 63 | |
100 | 27 | 20 | 24 | 29 | 33 | 37 | 42 | 46 | 51 | 54 | 59 | |
125 | 22 | 16 | 20 | 25 | 29 | 33 | 38 | 43 | 47 | 52 | 56 | |
160 | 18 | 12 | 17 | 22 | 26 | 31 | 35 | 40 | 45 | 49 | 53 | |
200 | 15 | 9 | 14 | 19 | 23 | 28 | 33 | 37 | 42 | 47 | 51 | |
250 | 11 | 6 | 11 | 16 | 21 | 25 | 30 | 35 | 40 | 44 | 49 | |
320 | 9 | 4 | 9 | 14 | 18 | 23 | 28 | 32 | 38 | 42 | 47 | |
400 | 6 | 2 | 7 | 11 | 16 | 21 | 26 | 30 | 35 | 40 | 45 | |
500 | 4 | 0 | 5 | 9 | 14 | 19 | 24 | 29 | 34 | 39 | 44 | |
630 | 2 | 0 | 4 | 8 | 13 | 18 | 23 | 27 | 32 | 37 | 42 | |
800 | 1 | 0 | 4 | 8 | 11 | 17 | 21 | 26 | 31 | 36 | 41 | |
1k | 1 | 0 | 4 | 8 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | |
1.25k | 0 | 0 | 4 | 8 | 10 | 14 | 19 | 24 | 29 | 34 | 39 | |
1.6k | -1 | 0 | 4 | 8 | 10 | 13 | 18 | 23 | 28 | 33 | 38 | |
2k | -2 | 0 | 4 | 8 | 10 | 12 | 17 | 21 | 27 | 32 | 37 | |
2.5k | -3 | 0 | 4 | 8 | 10 | 11 | 16 | 21 | 26 | 32 | 37 | |
3.2k | -5 | 0 | 4 | 8 | 10 | 10 | 15 | 20 | 25 | 31 | 36 | |
4k | -5 | 0 | 4 | 8 | 10 | 10 | 15 | 19 | 24 | 30 | 35 | |
5k | -4 | 0 | 4 | 8 | 10 | 10 | 14 | 18 | 24 | 30 | 34 | |
6.3k | 1 | 0 | 4 | 8 | 10 | 10 | 14 | 18 | 23 | 29 | 34 | |
8k | 6 | 0 | 4 | 8 | 10 | 10 | 14 | 17 | 23 | 28 | 33 | |
10k | 10 | 0 | 4 | 8 | 10 | 10 | 14 | 17 | 22 | 27 | 32 |