a5d1941d28
Adds necessary standalone #imports; makes safe for signed types.
2020-04-25 22:21:10 -04:00
65a3783dd2
Attempts the tom tom.
2020-04-25 19:21:55 -04:00
b9b5c2a3bc
Takes a first run at proper slot mixing and the bass drum.
2020-04-25 18:01:05 -04:00
12c618642e
Corrects output range.
2020-04-25 00:07:58 -04:00
6ebc93c995
Switches to maximum-rate multiplexing. Hopefully to eliminate the mixer as a consideration for now.
2020-04-24 23:50:06 -04:00
6d4e29c851
Strips mixer back to basics in search of audio issues.
2020-04-24 23:32:02 -04:00
b3979e2fda
Looking towards rhythm mode, and in search of bugs: factors out ADSR.
...
Further factorings to come.
2020-04-24 18:48:32 -04:00
983c32bf75
Adds vibrato.
...
This would complete melodic output, subject to bug fixes.
2020-04-24 18:02:41 -04:00
9e3614066a
Adds tremolo support, switches to global timer for ADSR stages other than attack.
2020-04-23 23:55:49 -04:00
c7ad6b1b50
Minor layout and commenting improvements.
2020-04-21 23:35:48 -04:00
676dcf7fbb
Calculates the proper key scale rate, though ADSR itself is still lacking that precision.
2020-04-21 22:57:56 -04:00
50d725330c
Adds missing header.
2020-04-21 22:48:52 -04:00
2886dd1dae
Collapses key-level scaling to a single 2d table.
...
I dare imagine I can do better; the columns in particular look like arithmetic progressions.
2020-04-21 20:19:02 -04:00
40424ac38b
Re-enables key-level scaling, with 3db and 1.5db the correct way around.
2020-04-21 20:10:40 -04:00
a4d3865394
Decreases sustain level attenuation; disables key-level scaling for now.
...
The latter was definitely wrong, I also think I don't need the big four tables.
2020-04-21 19:58:40 -04:00
0ac99e8d42
Disables low low-pass filter, honours audio control bits for better volume usage.
2020-04-21 19:57:13 -04:00
bdce1c464a
Takes a shot at key-level scaling. Testing to come.
2020-04-21 00:09:42 -04:00
475d75c16a
Preserves fractional part of modulator phase.
2020-04-20 23:35:37 -04:00
32fd1897d0
Via a unit test, confirms and fixes relative volumes of OPLL channels.
...
Also rejigs responsibility for scaling to emulator-standard volume.
2020-04-20 23:17:29 -04:00
39e6a28730
Rearranges file.
2020-04-20 19:41:04 -04:00
3852e119aa
Adds test data for FM wave generation.
2020-04-20 19:33:03 -04:00
f19fd7c166
Pulls out common melodic update calls.
2020-04-20 18:58:31 -04:00
100fddcee1
Corrects divider, takes another whack at ADSR.
2020-04-20 18:58:10 -04:00
99fa86a67e
Adds a test for lookup sine. And fixes lookup sine.
2020-04-20 18:40:47 -04:00
6568c29c54
Improves commentary.
2020-04-19 22:42:25 -04:00
c54bbc5a04
Rename Table.h; LogSin -> LogSign and make it a bit more typer.
2020-04-19 13:33:17 -04:00
92d0c466c2
Moves complete phase -> output calculation inside Operator.
...
Reasoning being: otherwise I wasn't currently enforcing non-sine waveforms.
2020-04-19 13:27:24 -04:00
020c760976
Simplifies the phase counter.
2020-04-19 00:30:14 -04:00
cdfd7de221
Minor: enables all melodic channels when rhythm mode is disabled; supports non-modulated channels.
2020-04-18 17:48:29 -04:00
3da2e91acf
Adjusts range of output, makes declaration of level full owner of type information.
2020-04-17 23:29:09 -04:00
3948304172
Attempts to use table-based maths.
2020-04-17 23:23:16 -04:00
4a295cd95e
Wraps log_sin in an access function to enshrine sign and mask rules; switches both functions to non-math.h clashing names.
2020-04-17 23:22:42 -04:00
6f7c8b35c5
Applies an ahead-of-time transformation to the exp table, and wraps it in a helper function.
2020-04-17 22:33:13 -04:00
e58ba27c00
Clarifies meaning of scaling. Though it isn't yet applied.
2020-04-17 22:30:10 -04:00
0aceddd088
Starts tidying up the OPL2.
...
This is as a precursor to switching to using the proper table lookups, which I hope will automatically fix my range issues.
2020-04-15 22:10:50 -04:00
30ff399218
With some fixes for scale, I think possibly this is close for melodic channels.
2020-04-15 21:27:27 -04:00
a7e63b61eb
Just from printing numbers: corrects transition from attack to decay.
2020-04-15 00:26:01 -04:00
b13b0d9311
Starts towards implementing some OPL test cases.
2020-04-14 23:51:45 -04:00
d8380dc3e2
Tries to be a little neater in spelling out the work here.
...
I think I'm somewhat circling here now; I need to think of a way of getting clean comparison data.
2020-04-14 21:55:42 -04:00
d805e9a8f0
Actually, octave probably works this way around? Higher octaves = higher frequencies.
2020-04-14 21:39:12 -04:00
aa45142728
Endeavours to fix attenuation and add FM synthesis.
...
I now definitely think my frequency counting is wrong.
2020-04-14 18:32:06 -04:00
09d1aed3a5
Attempts to voice the current attenuation (and, therefore, the ADSR output), even if linearly rather than logarithmically.
2020-04-13 22:12:55 -04:00
a1f80b5142
Takes a stab at per-operator ADSR.
...
Heavy caveats apply: no KSR is applied, non-ADSR attenuation isn't applied, attenuation isn't voiced in general.
2020-04-13 21:39:06 -04:00
cb1970ebab
Switch to more compact form of output for bool.
...
This also will hopefully deal with GCC's slightly confused claim that 'value' may be used without having been initialised down at #define OutputIntC (i.e. after it's out of scope, but I can sort of see why GCC might get confused while it remains in scope).
2020-04-12 14:40:32 -04:00
d3fbdba77c
Add missing #include.
2020-04-12 14:20:02 -04:00
632d797c9d
Adjusts frequency formula. This could be close.
...
I guess next I need to get ADSR/volume in general working, before I can go FM? Then I'll worry about using the proper log-sin/exp tables.
2020-04-12 14:15:09 -04:00
559a2d81c1
Baby step: starts trying to output the raw FM carrier, no modulation, no ADSR.
2020-04-12 12:46:40 -04:00
7a5f23c0a5
Adds accommodations for the OPLL.
2020-04-10 22:05:22 -04:00
84b115f15f
Attempts to move forward in defining what the parts of an OPL are meant to do.
2020-04-10 19:13:52 -04:00
a0d14f4030
Starts trying to make sense of the various fields at play.
2020-04-08 23:15:44 -04:00
Thomas Harte