furnace/doc/8-advanced/grooves.md

grooves

grooves are macros for speed.

a groove is the equivalent of repeating 0Fxx commands on each row to get a cycle of speeds. for example, a groove of "6 4 5 3" makes the first row 6 ticks long, the next row 4 ticks, then 5, 3, 6, 4, 5, 3...

to set the song's groove:

• open the "Speed" window.
• click the "Speed" button so it becomes "Speeds" (effectively a groove of two speeds).
• click again so it becomes "Groove".
• enter a sequence of up to 16 speeds.

the "Grooves" window is for entering preset groove patterns.

• the + button adds a new groove pattern; click in the pattern to edit it.
• 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