Cutoff Formulas
This page details the formulas/methods used in various games to determine which star rating to award a player.
Rock Band Formula
The general formula for determining a cutoff in Rock Band or Rock Band 2 is:
cutoff_score = average_multiplier * total_base_score + ceiling(num_vocal_percussion * percussion_multiplier)
average_multiplier - value taken from the tables shown below
total_base_score - the sum of the base scores for all instruments involved in the performance
- Guitar: base score = all notes played at 1x multiplier, all sustains held fully
- Bass: base score = all notes played at 1x multiplier, all sustains held fully
- Drums: base score = all notes played at 1x multiplier, including all notes under all fills
- Vocals: base score = number of phrases * max points per phrase (varies by difficulty)
num_vocal_percussion - the number of percussion notes in the vocals chart, zero if vocals not involved
percussion_multiplier - varies depending on cutoff
- 1 star: 31.25
- 2 stars: 62.5
- 3 stars: 93.75
- 4 stars: 112.5
- 5 stars: 125
- gold stars: 125
Rock Band (unpatched)
Instruments | 1* | 2* | 3* | 4* | 5* | gold* |
Guitar | 0.21 | 0.46 | 0.77 | 1.85 | 3.08 | 4.68 |
Bass | 0.32 | 0.69 | 1.15 | 2.77 | 4.62 | 7.02 |
Drums | 0.21 | 0.46 | 0.77 | 1.85 | 3.08 | 4.44 |
Vocals | 0.21 | 0.46 | 0.77 | 1.85 | 3.08 | 4.68 |
Guitar + Bass | 0.32 | 0.68 | 1.14 | 2.73 | 4.55 | 7.55 |
Guitar + Drums | 0.25 | 0.54 | 0.91 | 2.18 | 3.64 | 5.73 |
Guitar + Vocals | 0.25 | 0.54 | 0.91 | 2.18 | 3.64 | 6.04 |
Bass + Drums | 0.32 | 0.68 | 1.14 | 2.73 | 4.55 | 7.17 |
Bass + Vocals | 0.32 | 0.68 | 1.14 | 2.73 | 4.55 | 7.55 |
Drums + Vocals | 0.25 | 0.54 | 0.91 | 2.18 | 3.64 | 5.73 |
Guitar + Bass + Drums | 0.34 | 0.74 | 1.23 | 2.94 | 4.90 | 8.20 |
Guitar + Bass + Vocals | 0.34 | 0.74 | 1.23 | 2.94 | 4.90 | 8.63 |
Guitar + Drums + Vocals | 0.29 | 0.63 | 1.05 | 2.52 | 4.20 | 7.03 |
Bass + Drums + Vocals | 0.34 | 0.74 | 1.23 | 2.94 | 4.90 | 8.20 |
Guitar + Bass + Drums + Vocals | 0.35 | 0.80 | 1.34 | 3.21 | 5.35 | 9.36 |
Rock Band (with Sept 4, 2008 patch)
Highlighted cells indicate values that were changed by the patch
Instruments | 1* | 2* | 3* | 4* | 5* | gold* |
Guitar | 0.21 | 0.46 | 0.77 | 1.85 | 3.08 | 4.52 |
Bass | 0.21 | 0.50 | 0.90 | 2.77 | 4.62 | 6.78 |
Drums | 0.21 | 0.46 | 0.77 | 1.85 | 3.08 | 4.29 |
Vocals | 0.21 | 0.46 | 0.77 | 1.85 | 3.08 | 4.52 |
Guitar + Bass | 0.25 | 0.60 | 0.90 | 2.73 | 4.55 | 6.95 |
Guitar + Drums | 0.25 | 0.54 | 0.91 | 2.18 | 3.64 | 5.28 |
Guitar + Vocals | 0.25 | 0.54 | 0.91 | 2.18 | 3.64 | 5.56 |
Bass + Drums | 0.25 | 0.60 | 0.99 | 2.73 | 4.55 | 6.60 |
Bass + Vocals | 0.25 | 0.60 | 0.99 | 2.73 | 4.55 | 6.95 |
Drums + Vocals | 0.25 | 0.54 | 0.91 | 2.18 | 3.64 | 5.28 |
Guitar + Bass + Drums | 0.29 | 0.63 | 1.05 | 2.94 | 4.90 | 7.31 |
Guitar + Bass + Vocals | 0.29 | 0.63 | 1.05 | 2.94 | 4.90 | 7.70 |
Guitar + Drums + Vocals | 0.29 | 0.63 | 1.05 | 2.52 | 4.20 | 6.27 |
Bass + Drums + Vocals | 0.29 | 0.63 | 1.05 | 2.94 | 4.90 | 7.31 |
Guitar + Bass + Drums + Vocals | 0.35 | 0.80 | 1.34 | 3.21 | 5.35 | 8.16 |
Rock Band 2
Highlighted cells indicate changed values from patched RB1
Instruments | 1* | 2* | 3* | 4* | 5* | gold* |
Guitar | 0.21 | 0.46 | 0.77 | 1.85 | 3.08 | 4.52 |
Bass | 0.21 | 0.50 | 0.90 | 2.77 | 4.62 | 6.78 |
Drums | 0.21 | 0.46 | 0.77 | 1.85 | 3.08 | 4.29 |
Vocals | 0.21 | 0.46 | 0.77 | 1.85 | 3.08 | 4.18 |
Guitar + Bass | 0.25 | 0.60 | 0.99 | 2.73 | 4.55 | 6.95 |
Guitar + Drums | 0.25 | 0.54 | 0.91 | 2.18 | 3.64 | 5.28 |
Guitar + Vocals | 0.25 | 0.54 | 0.91 | 2.18 | 3.64 | 5.28 |
Bass + Drums | 0.25 | 0.60 | 0.99 | 2.73 | 4.55 | 6.60 |
Bass + Vocals | 0.25 | 0.60 | 0.99 | 2.73 | 4.55 | 6.60 |
Drums + Vocals | 0.25 | 0.54 | 0.91 | 2.18 | 3.64 | 5.18 |
Guitar + Bass + Drums | 0.29 | 0.63 | 1.05 | 2.94 | 4.90 | 7.31 |
Guitar + Bass + Vocals | 0.29 | 0.63 | 1.05 | 2.94 | 4.90 | 7.31 |
Guitar + Drums + Vocals | 0.29 | 0.63 | 1.05 | 2.52 | 4.20 | 6.27 |
Bass + Drums + Vocals | 0.29 | 0.63 | 1.05 | 2.94 | 4.90 | 7.31 |
Guitar + Bass + Drums + Vocals | 0.35 | 0.80 | 1.34 | 3.21 | 5.35 | 8.16 |
There is one comment on this page. [Display comment]