TheSleeve
Guest
- Jun 5, 2014
- 109
- 160
- 43
- Disclosures
- Source Audio LLC - Audio Systems Engineer and Product Manager
Is there any information on exactly what BPM the Manta's speed knob settings are? In particular, for MIDI CC control from 0 to 127 on the Manta, is there any way to know what number corresponds to what BPM? I would like to try setting a preset where going from heel down to heel up on my expression goes from crotchets to quavers at the exact tempo my band is recording at, so if there's any exact numbers that'll be a lot easier than trial and error to find the tempos.
I just looked up the source code for the Manta's tempo table. Unfortunately, it's not a nice logarithmic function - the table has been hand-tuned and therefore it's a little difficult to work with. Based on what I read in the code, I generated a table that converts MIDI CC values to LFO tempo in BPM. This should be correct, but I'm not able to do detailed tests at this time, so please give it a try and let me know if it works.
Code:
MIDI CC LFO Tempo (BPM)
0 6.0768
1 6.5736
2 7.0704
3 7.5672
4 8.064
5 8.568
6 9.072
7 9.576
8 10.08
9 10.656
10 11.232
11 11.808
12 12.384
13 13.032
14 13.68
15 14.328
16 14.976
17 15.696
18 16.416
19 17.136
20 17.856
21 18.648
22 19.44
23 20.232
24 21.024
25 21.96
26 22.896
27 23.832
28 24.768
29 25.92
30 27.072
31 28.224
32 29.376
33 30.744
34 32.112
35 33.48
36 34.848
37 36.432
38 38.016
39 39.6
40 41.184
41 42.912
42 44.64
43 46.368
44 48.096
45 50.04
46 51.984
47 53.928
48 55.872
49 58.032
50 60.192
51 62.352
52 64.512
53 67.032
54 69.552
55 72.072
56 74.592
57 77.112
58 79.632
59 82.152
60 84.672
61 87.552
62 90.432
63 93.312
64 96.192
65 99.792
66 103.392
67 106.992
68 110.592
69 114.912
70 119.232
71 123.552
72 127.872
73 133.272
74 138.672
75 144.072
76 149.472
77 156.024
78 162.576
79 169.128
80 175.68
81 183.6
82 191.52
83 199.44
84 207.36
85 216.72
86 226.08
87 235.44
88 244.8
89 255.6
90 266.4
91 277.2
92 288
93 299.52
94 311.04
95 322.56
96 334.08
97 349.2
98 364.32
99 379.44
100 394.56
101 413.28
102 432
103 450.72
104 469.44
105 493.92
106 518.4
107 542.88
108 567.36
109 596.88
110 626.4
111 655.92
112 685.44
113 723.6
114 761.76
115 799.92
116 838.08
117 882
118 925.92
119 969.84
120 1013.76
121 1064.16
122 1114.56
123 1164.96
124 1215.36
125 1215.36
126 1215.36
127 1215.36
