sound research & evolution
| Tone | Frequency Hz |
Interval reference |
Ratio | Interval |
| B-1 | 15 | |||
| B0 | 30 | |||
| B1 | 60 | H1 60 Hz | 1/1 | prime |
| C2 | 64 | H1 60 Hz | 16/15 | minor second |
| C#2 | 67,5 | H1 60 Hz | 9/8 | major second |
| D2 | 72 | H1 60 Hz | 6/5 | minor third |
| D#2 | 75 | H1 60 Hz | 5/4 | major third |
| E2 | 80 | H1 60 Hz | 4/3 | perfect fourth |
| F2 | 84,38 | H1 60 Hz | 45/32 | augmented fourth |
| F#2 | 90 | H1 60 Hz | 3/2 | perfect fifth |
| G2 | 96 | H1 60 Hz | 8/5 | minor sixth |
| G#2 | 100 | H1 60 Hz | 5/3 | major sixth |
| A2 | 108 | H1 60 Hz | 9/5 16/9 | minor seventh |
| A#2 | 112,5 | H1 60 Hz | 15/8 | major seventh |
| B2 | 120 | H2 120 Hz | 1/1 | prime |
| C3 | 128 | H2 120 Hz | 16/15 | minor second |
| C#3 | 135 | H2 120 Hz | 9/8 | major second |
| D3 | 144 | H2 120 Hz | 6/5 | minor third |
| D#3 | 150 | H2 120 Hz | 5/4 | major third |
| E3 | 160 | H2 120 Hz | 4/3 | perfect fourth |
| F3 | 168,75 | H2 120 Hz | 45/32 | augmented fourth |
| F#3 | 180 | H2 120 Hz | 3/2 | perfect fifth |
| G3 | 192 | H2 120 Hz | 8/5 | minor sixth |
| G#3 | 200 | H2 120 Hz | 5/3 | major sixth |
| A3 | 216 | H2 120 Hz | 9/5 16/9 | minor seventh |
| A#3 | 225 | H2 120 Hz | 15/8 | major seventh |
| B3 | 240 | H3 240 Hz | 1/1 | prime |
| C4 | 256 | H3 240 Hz | 16/15 | minor second |
| C#4 | 270 | H3 240 Hz | 9/8 | major second |
| D4 | 288 | H3 240 Hz | 6/5 | minor third |
| D#4 | 300 | H3 240 Hz | 5/4 | major third |
| E4 | 320 | H3 240 Hz | 4/3 | perfect fourth |
| F4 | 337,5 | H3 240 Hz | 45/32 | augmented fourth |
| F#4 | 360 | H3 240 Hz | 3/2 | perfect fifth |
| G4 | 384 | H3 240 Hz | 8/5 | minor sixth |
| G#4 | 400 | H3 240 Hz | 5/3 | major sixth |
| A4 | 432 | H3 240 Hz | 9/5 16/9 | minor seventh |
| A#4 | 450 | H3 240 Hz | 15/8 | major seventh |
| B4 | 480 | H4 480 Hz | 1/1 | prime |
| C5 | 512 | H4 480 Hz | 16/15 | minor second |
| C#5 | 540 | H4 480 Hz | 9/8 | major second |
| D5 | 576 | H4 480 Hz | 6/5 | minor third |
| D#5 | 600 | H4 480 Hz | 5/4 | major third |
| E5 | 640 | H4 480 Hz | 4/3 | perfect fourth |
| F5 | 675 | H4 480 Hz | 45/32 | augmented fourth |
| F#5 | 720 | H4 480 Hz | 3/2 | perfect fifth |
| G5 | 768 | H4 480 Hz | 8/5 | minor sixth |
| G#5 | 800 | H4 480 Hz | 5/3 | major sixth |
| A5 | 864 | H4 480 Hz | 16/9 | minor seventh |
| A#5 | 900 | H4 480 Hz | 15/8 | major seventh |
| B5 | 960 | H5 960 Hz | 1/1 | prime |
| C6 | 1024 | H5 960 Hz | 16/15 | minor second |
| C#6 | 1080 | H5 960 Hz | 9/8 | major second |
| D6 | 1152 | H5 960 Hz | 6/5 | minor third |
| D#6 | 1200 | H5 960 Hz | 5/4 | major third |
| E6 | 1280 | H5 960 Hz | 4/3 | perfect fourth |
| F6 | 1350 | H5 960 Hz | 45/32 | augmented fourth |
| F#6 | 1440 | H5 960 Hz | 3/2 | perfect fifth |
| G6 | 1536 | H5 960 Hz | 8/5 | minor sixth |
| G#6 | 1600 | H5 960 Hz | 5/3 | major sixth |
| A6 | 1728 | H5 960 Hz | 9/5 16/9 | minor seventh |
| A#6 | 1800 | H5 960 Hz | 15/8 | major seventh |
| B6 | 1920 | H6 1920 Hz | 1/1 | prime |
| C7 | 2048 | H6 1920 Hz | 16/15 | minor second |
| C#7 | 2160 | H6 1920 Hz | 9/8 | major second |
| D7 | 2304 | H6 1920 Hz | 6/5 | minor third |
| D#7 | 2400 | H6 1920 Hz | 5/4 | major third |
| E7 | 2560 | H6 1920 Hz | 4/3 | perfect fourth |
| F7 | 2700 | H6 1920 Hz | 45/32 | augmented fourth |
| F#7 | 2880 | H6 1920 Hz | 3/2 | perfect fifth |
| G7 | 3072 | H6 1920 Hz | 8/5 | minor sixth |
| G#7 | 3200 | H6 1920 Hz | 5/3 | major sixth |
| A7 | 3456 | H6 1920 Hz | 9/5 16/9 | minor seventh |
| A#7 | 3600 | H6 1920 Hz | 15/8 | major seventh |
| B7 | 3840 | H7 3840 Hz | 1/1 | prime |
| C8 | 4096 | H7 3840 Hz | 16/15 | minor second |