kris
21c2257e5c
Tidy
2022-07-03 23:18:08 +01:00
kris
8eeb26379d
Oops, add missing file
2022-07-03 23:11:20 +01:00
kris
6ff35df1ae
Oops, add build file for lookahead.pyx
2022-07-03 23:10:43 +01:00
kris
233e94d94f
Tidy
2022-07-03 23:09:04 +01:00
kris
f65aaba765
Write out wav files incrementally during processing
2022-07-03 22:42:45 +01:00
kris
2e3e51bb99
Chunk the output resampling to limit memory use
2022-07-03 22:33:01 +01:00
kris
18a16999b0
Tweak to handle full audio files without crashing
2022-07-03 22:32:36 +01:00
kris
a9e7a1bbff
Implement (10,10) eof duty cycle as a special case
2022-07-02 21:59:08 +01:00
kris
6772b579ca
Dramatically reduce memory use
2022-07-02 21:20:16 +01:00
kris
0d217e9326
Improved quality and speed
2022-07-02 20:53:12 +01:00
kris
d153119231
Allow writing out a noise wav file containing the difference between input and output audio
2022-07-02 16:50:42 +01:00
kris
535656aceb
Working!
2022-07-02 14:15:41 +01:00
kris
2a20bebb37
Tidy
2022-07-02 11:43:35 +01:00
kris
3458d3a1de
Assert combined EOF operations have the expected (a, b) cadence
2022-07-02 11:42:36 +01:00
kris
2016e4a5f1
Tidy
2022-07-02 10:58:38 +01:00
kris
622583696d
Simplify player op generation
2022-07-02 10:52:23 +01:00
kris
efb66e03d8
Begin to rework player operation generation
2022-07-02 10:05:21 +01:00
kris
695ddb2c10
Checkpoint
2022-07-02 00:27:27 +01:00
kris
445ec18f34
WIP - tidy and compute the minimum duty cycle for variants that have a STA $C030 in stage 2 trampoline
2022-07-01 23:17:25 +01:00
kris
47c7f441cf
WIP - generate 3 stage EOF trampoline parametrized by (a, b) duty cycles
2022-07-01 22:22:38 +01:00
kris
c33e835f7a
Simulate at clock speed and downsample output
2022-06-28 22:09:42 +01:00
kris
9a9434e9aa
Tweak
2022-06-28 22:09:21 +01:00
kris
d2cdceb04e
Regenerate
2022-06-28 22:09:09 +01:00
kris
11afaa152b
- Only use the minimal player, quality is better and we don't often need more than 6 cycle gaps
...
- Generate 1-cycle EOF opcodes for now, but we'll need to tweak further.
- Generate both duty cycle orderings (a,b) and (b,a) since we anchor the EOF opcodes with a STA $C030 at the beginning
- Sort EOF by total length so it's clearer when looking at the usage profile which ones are needed
2022-06-28 22:06:38 +01:00
kris
346c647c40
Tweaks
2022-06-28 22:04:57 +01:00
kris
73ef91b5ad
Simulate PWM audio filtered through speaker
2022-06-26 21:50:29 +01:00
kris
804ce60434
Clean up some more and restore fake EOF opcodes
2022-06-25 15:26:14 +01:00
kris
efa63a5ab2
Tidy
2022-06-25 15:15:40 +01:00
kris
e0908a9ced
WIP - refactor player generation to be a) deterministic b) use opcodes_6502 c) statically enumerate a minimal set of opcode sequences. Since we're giving up on using arbitrary opcode combinations this is much simpler, and maybe more correct.
2022-06-25 15:14:17 +01:00
kris
bc032ae3ca
Autogenerate eof with speaker opcode interleaving
2022-06-21 22:32:12 +01:00
kris
cb5de62cc8
Look ahead beyond the EOF opcodes for better prediction quality
...
Normalize based on 100th percentile
2022-06-21 21:33:19 +01:00
kris
a48e7b796c
Oops, EOF opcodes weren't being padded
2022-06-11 21:13:36 +01:00
kris
b1bd8f7b19
Don't need most EOF
2022-06-11 17:39:57 +01:00
kris
13fb60fed0
Add a lot of EOF variants - quality is good but they're mostly not used
2022-06-11 17:27:52 +01:00
kris
1552715b49
Optimized EOF sequence
2022-06-04 14:53:33 +01:00
kris
fbd6b956d1
Checkpoint working player
2022-06-04 14:06:52 +01:00
kris
8ea4f150ad
Checkpoint - trying to mitigate EOF clicking
2022-05-24 22:19:40 +01:00
kris
b97a625d7d
Working version of encoder. This reproduces the clicking that happens from end-of-frame, so we will need a new strategy
2022-05-16 21:11:17 +01:00
kris
33ce46a19c
Second order difference equation for damped harmonic oscillator, from "Signal processing in C"
2022-05-16 10:43:40 +01:00
kris
929ea026d9
Format comment
2020-12-29 14:33:22 +00:00
kris
daee564255
Rename slowpath opcode to end_of_frame to better describe what it does.
...
Add command-line flags for audio normalization params.
2020-12-28 22:42:34 +00:00
kris
ccba51eead
Add support for targeting 6502, for which the JMP (indirect) opcode
...
takes 5 cycles instead of 6.
2020-12-28 13:23:57 +00:00
kris
38280e7d93
Add more audio file types
2020-12-28 13:23:18 +00:00
kris
d4bc2d45e5
Parametrize options by command-line flags
2020-12-28 12:54:44 +00:00
kris
4090c502a8
Add back preprocess_audio for converting audio sample rate. It's
...
faster to do this once when converting an audio file many times.
2020-12-28 12:54:39 +00:00
kris
4666171aaa
Count and report on the number of speaker toggles/sec during encoding.
2020-12-28 12:30:29 +00:00
kris
a1a1f33c21
Add partial support for 4-cycle NOP; NOP opcode pairs
...
Count and report on the number of speaker toggles/sec during encoding
2020-12-28 12:29:05 +00:00
kris
089591737f
Regen
2020-12-24 14:44:19 +00:00
kris
cef38dae59
Comment nit
2020-12-24 14:44:09 +00:00
kris
4701dc14f1
Regen
2020-12-24 14:43:51 +00:00