Commit Graph

44 Commits

Author SHA1 Message Date
Jeff Epler 0fe750269f
Documentation improvements 2023-11-20 10:36:50 -06:00
Jeff Epler 774f6ac6ab
Switch to using MP_ERROR_TEXT instead of translate, globally 2023-10-30 09:49:06 +01:00
Jeff Epler f812750a76
fix use of mp_type_fileio 2023-09-22 13:56:55 -05:00
Jeff Epler e48984872b
allow definition of namedtuples in core 2023-09-22 13:56:16 -05:00
Jeff Epler e1af819a91
fix (unused) default for some required args 2023-09-22 13:53:11 -05:00
Dan Halbert 2171e67c1b merge latest adafruit/main 2023-08-13 19:43:54 -04:00
Dan Halbert fe0e2f13bc wip; fix qstr processing 2023-08-10 20:06:32 -04:00
Dan Halbert 0d2c3c3f08 wip: continuing compilation fixes; mp_obj_alloc everywhere 2023-08-07 20:45:57 -04:00
Jeff Epler ddeb27d335
the note is in its attack phase 2023-08-04 18:40:30 -05:00
Jeff Epler 60b233f160
document EnvelopeState 2023-07-20 16:26:07 -05:00
Jeff Epler 346f08f8b9
synthio: Add Synthesizer.note_state
This enables the specific use case of checking whether a note's release
phase has ended, but is also potentially useful to implement a sort of
"voice stealing" algorithm in Python code, which can take account of
the note's envelope state as well as other factors specific to the
program.
2023-07-20 13:16:00 -05:00
Jeff Epler fed8d5825b
synthio: add biquad filter type & basic filter calculations
the filter cannot be applied as yet.
2023-05-29 09:50:18 -05:00
Jeff Epler 1847c2b72a
synthio: fix, rename voct_to_hz
todbot discovered that this function wasn't working right, and wasn't
well-named.
2023-05-23 19:38:24 -05:00
Jeff Epler af40a173ba
synthio: midi_to_hz: remove arbitrary note number limitation
The underlying routine can return numbers for higher and lower
octaves. Other bits of the code might have frequency limitations
but that doesn't mean we shouldn't let someone get a ~4Hz "note"
by sending in (-12), because that's actually totally plausible as
an LFO frequency.
2023-05-22 21:58:09 -05:00
Jeff Epler 4f671dab6f
synthio: one more doc fix 2023-05-21 19:15:34 -05:00
Jeff Epler 4d60c4608e
synthio: doc fixes 2023-05-21 17:49:30 -05:00
Jeff Epler bd2a153eae
synthio: there is a midi note 0 2023-05-17 16:37:12 -05:00
Jeff Epler 391438102b
synthio: Finish implementing Math blocks 2023-05-17 16:32:20 -05:00
Jeff Epler 5de4d197a2
synthio: start generalizing LFO to Block 2023-05-17 15:05:34 -05:00
Jeff Epler f83212314e
synthio: Add LFOs 2023-05-15 21:15:39 -05:00
Jeff Epler 33fb771b76
synthio: Add `filter` argument to Synthesizer constructor
as step 1/n of adding FIR filtering
2023-05-11 17:56:11 -05:00
Jeff Epler d3eda0ad52
synthio: fix a typing error 2023-05-11 17:32:42 -05:00
Jeff Epler 17df238145
synthio: doc fixes, rename BendType to BendMode 2023-05-11 15:23:54 -05:00
Jeff Epler 89080564b4
synthio: Fix release time of zero-sustain envelopes
When there's no sustain, the release step needs to be calculated from
the attack level, not the sustain level. Otherwise, contrary to intent,
this leads to the actual release taking a loooonnngg time.
2023-05-11 10:19:48 -05:00
Jeff Epler 1d1907b98b
synthio: Generalize vibrato into bend
bend can be static, sweep, or vibrato
2023-05-11 09:31:07 -05:00
Jeff Epler c48d385e94
synthio: Add `synthio.BendType` 2023-05-11 09:31:07 -05:00
Jeff Epler a53c0ed066
synthio: add onevo_to_hz, implement midi_to_hz in terms of it
this has the side effect of making some notes more accurate, the new
frequency= value in the test is closer to the true midi frequency of
830.609...Hz.
2023-05-06 21:35:19 -05:00
Jeff Epler a854e554f4
synthio: add midi_to_hz to docs 2023-05-06 21:35:16 -05:00
Jeff Epler 1701552dec
synthio: make sustain level relative to attack level
and re-vamp overall envelope calculation again.

Now, if you set a low overall attack level like 0.2 this avoids the
"diminishing volume" effect when many notes sound at once. You need
simply choose a maximum attack level that is appropriate for the max
number of voices that will actually be played.
2023-05-04 07:23:50 -05:00
Jeff Epler a7da245ad0
synthio: Add synthio.Note
This class allows much more expressive sound synthesis:
 * tremolo & vibrato
 * arbitrary frequency
 * different evelope & waveform per note
 * all properties dynamically settable from Python code
2023-05-04 07:23:49 -05:00
Jeff Epler 5514e3065d
synthio: add midi_to_hz
to convert notes in the MIDI 1-127 note scale to floating point Hz
2023-05-04 07:23:48 -05:00
Jeff Epler 1fafa4dc24
synthio: improve Envelope constructor 2023-05-03 09:37:04 -05:00
Jeff Epler b2f32a5397
Apply suggestions from code review
Co-authored-by: Scott Shawcroft <scott@tannewt.org>
2023-05-02 19:22:10 -05:00
Jeff Epler c369527ace
remove line added while debugging failed doc builds
Co-authored-by: Scott Shawcroft <scott@tannewt.org>
2023-05-02 19:17:51 -05:00
Jeff Epler 12c1a72f03
synthio: implement envelope
This works for me (tested playing midi to raw files on host computer, as
well as a variant of the nunchuk instrument on pygamer)

it has to re-factor how/when MIDI reading occurs, because reasons.

endorse new test results

.. and allow `-1` to specify a note with no sustain (plucked)
2023-04-25 12:05:53 -05:00
Jeff Epler b011468251
Add synthio.Synthesizer
In contrast to MidiTrack, this can be controlled from Python code,
turning notes on/off as desired.

Not tested on real HW yet, just the acceptance test based on checking
which notes it thinks are held internally.
2023-04-02 20:37:23 -05:00
Jeff Epler e9e4ce9546
add waveform support in synthio
a waveform object (array of 'h') can be passed in, replacing the
standard square wave. This waveform must be a 'single cycle waveform'
and some obvious things to pass in are sine, triangle or sawtooth waves,
but you can construct whatever you like.
2023-04-01 11:46:38 -05:00
Jeff Epler 13e17e6dcd
Make synthio debuggable in unix coverage port 2023-04-01 11:46:36 -05:00
Jeff Epler 907c5d387f
Tweak black_bindings
Originally, black_bindings found each contiguous "//|" block and sent
it to black independently. This was slower than it needed to be.

Instead, swap the comment prefix: when running black, take off
"//|" prefixes and put "##|" prefixes on all un-prefixed lines.
Then, after black is run, do the opposite operation

This more than doubles the overall speed of "pre-commit run --all",
from 3m20s to 55s CPU time on my local machine (32.5s to under 10s
"elapsed" time)

It also causes a small amount of churn in the bindings, because
black now sees enough context to know whether one 'def' follows another
or ends the 'def's in a 'class'. In the latter case, it adds an extra
newline, which becomes a "//|" line.

I'm less sure why a trailing comma was omitted before down in
rp2pio/StateMachine.c but let's roll with it.
2022-09-30 11:18:13 -05:00
Jeff Epler b2cc8d2aad
run black_bindings across all bindings 2022-09-27 15:21:42 -05:00
Dan Halbert a01dec1df9 message consolidation and more use of validators 2022-05-19 15:38:37 -04:00
Rob Capellini 1c8828223f Convert more modules to use MP_REGISTER_MODULE
Convert neopixel_write, onewireio, ps2io, pulseio, pwmio, rainbowio, random, rgbmatrix, rotaryio, rtc, sdcardio, sharpdisplay, _stage, storage, struct, supervisor, synthio, touchio, traceback, usb_cdc, usb_hid, usb_midi, and vectorio modules to use MP_REGISTER_MODULE.

Related to #5183.
2021-08-30 22:29:51 -04:00
Scott Shawcroft 76033d5115
Merge MicroPython v1.11 into CircuitPython 2021-04-26 15:47:41 -07:00
Artyom Skrobov 8056af8648 [synthio] add a simple MidiTrack implementation 2021-03-26 16:38:10 -04:00