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Adding BPM table to grooves doc.

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Electric Keet 2023-09-07 16:50:33 -07:00
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1
doc/2-interface/song-info.md
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@ -38,6 +38,7 @@ _**Virtual Tempo**:_ Simulates any arbitrary tempo without altering the tick rat
- Set the second virtual tempo number (denominator) to 150.
- The track will play at 200 BPM.
- The ratio doesn't have to match BPM numbers. Set the numerator to 4 and the denominator to 5, and the virtual BPM becomes 150 × 4/5 = 120.
- Another way to accomplish this with more control over the results is to use grooves. See the page on [grooves](../8-advanced/grooves.md) for details.
_**Divider**:_ Changes the effective tick rate. A tick rate of 60Hz and a divisor of 6 will result in ticks lasting a tenth of a second each!

40
doc/8-advanced/grooves.md
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@ -21,3 +21,43 @@ The "Grooves" window is for entering preset groove patterns.
- The **`×`** buttons remove them.
A single `09xx` command will switch to the matching numbered groove pattern.
## BPM
this is a non-exhaustive list of grooves and their equivalent BPM.
_note:_ this table assumes a song's tick rate setting is left at its default value for the chosen engine speed: 60 for NTSC, or 50 for PAL.
BPM NTSC | BPM PAL | groove | | BPM NTSC | BPM PAL | groove
--------:|--------:|:-----------------------|-|---------:|--------:|:----------------------
100.00 | 83.33 | 9 | | 168.75 | 140.63 | 6, 5, 5
102.86 | 85.71 | 9, 9, 9, 8 | | 171.43 | 142.86 | 6, 5, 5, 5
103.85 | 86.54 | 9, 9, 8 | | 175.61 | 146.34 | 6, 5, 5, 5, 5, 5, 5, 5
105.88 | 88.24 | 9, 8 | | 180.00 | 150.00 | 5
108.00 | 90.00 | 9, 8, 8 | | 184.62 | 153.85 | 5, 5, 5, 5, 5, 5, 5, 4
109.09 | 90.91 | 9, 8, 8, 8 | | 189.47 | 157.89 | 5, 5, 5, 4
112.50 | 93.75 | 8 | | 192.86 | 160.71 | 5, 5, 4
114.29 | 95.24 | 8, 8, 8, 8, 8, 8, 8, 7 | | 194.59 | 162.16 | 6, 4, 5, 4, 5, 4, 5, 4
116.13 | 96.77 | 8, 8, 8, 7 | | 200.00 | 166.67 | 5, 4
118.03 | 98.36 | 9, 7, 8, 7, 8, 7, 8, 7 | | 205.71 | 171.43 | 5, 4, 5, 4, 5, 4, 4, 4
120.00 | 100.00 | 8, 7 | | 207.69 | 173.08 | 5, 4, 4
122.03 | 101.69 | 8, 7, 8, 7, 8, 7, 7, 7 | | 211.76 | 176.47 | 5, 4, 4, 4
124.14 | 103.45 | 8, 7, 7, 7 | | 218.18 | 181.82 | 5, 4, 4, 4, 4, 4, 4, 4
126.32 | 105.26 | 8, 7, 7, 7, 7, 7, 7, 7 | | 225.00 | 187.50 | 4
128.57 | 107.14 | 7 | | 232.26 | 193.55 | 4, 4, 4, 4, 4, 4, 4, 3
130.91 | 109.09 | 7, 7, 7, 7, 7, 7, 7, 6 | | 240.00 | 200.00 | 4, 4, 4, 3
133.33 | 111.11 | 7, 7, 7, 6 | | 245.45 | 204.55 | 4, 4, 3
135.00 | 112.50 | 7, 7, 6 | | 248.28 | 206.90 | 5, 3, 4, 3, 4, 3, 4, 3
135.85 | 113.21 | 8, 6, 7, 6, 7, 6, 7, 6 | | 257.14 | 214.29 | 4, 3
138.46 | 115.38 | 7, 6 | | 266.67 | 222.22 | 4, 3, 4, 3, 4, 3, 3, 3
141.18 | 117.65 | 7, 6, 7, 6, 7, 6, 6, 6 | | 270.00 | 225.00 | 4, 3, 3
142.11 | 118.42 | 7, 6, 6 | | 276.92 | 230.77 | 4, 3, 3, 3
144.00 | 120.00 | 7, 6, 6, 6 | | 288.00 | 240.00 | 4, 3, 3, 3, 3, 3, 3, 3
146.94 | 122.45 | 7, 6, 6, 6, 6, 6, 6, 6 | | 300.00 | 250.00 | 3
150.00 | 125.00 | 6 | | 327.27 | 272.73 | 3, 3, 3, 2
153.19 | 127.66 | 6, 6, 6, 6, 6, 6, 6, 5 | | 337.50 | 281.25 | 3, 3, 2
156.52 | 130.43 | 6, 6, 6, 5 | | 360.00 | 300.00 | 3, 2
158.82 | 132.35 | 6, 6, 5 | | 385.71 | 321.43 | 3, 2, 2
160.00 | 133.33 | 7, 5, 6, 5, 6, 5, 6, 5 | | 400.00 | 333.33 | 3, 2, 2, 2
163.64 | 136.36 | 6, 5 | | 450.00 | 375.00 | 2
167.44 | 139.53 | 6, 5, 6, 5, 6, 5, 5, 5 | | 900.00 | 750.00 | 1