linking fails with undefined references
as if srcs are not build

hide away I2S implementation in DAC object

goal is to have common way to output the audio (send to i2s, write to file, play, ...) and have (most) of the platform specific implementation hidden

generate LUT

https://arxiv.org/pdf/1905.06118.pdf

maybe reduce patterns to rhythm map and cluster from there
use humanization and infilling

• randomize vol
• if note is played -> leave out or add
  • randomize density
• make it adjustable no -> 100% (?) random

• test first!
• reference implementation using python

• might be just one step less

e.g. 808 vs. acoustic drums

• add switch to hardware
• get acoustic samples
• convert
• implement switching logic

make or cmake

when start & next are pressed -> randomize patter

needed for #25

https://embeddedartistry.com/course/introduction-to-build-systems/

cmake from https://github.com/Sinecure-Audio/TestsTalk

c.f. plerup/makeEspArduino#149

make ticks per pulse calcuation a function and unit test this function instead of inside Clock

• esp. i2s needs work
• ifdef to support both?

https://www.youtube.com/watch?v=XFuKHCTBSWY

• fixed length
• poti controls no. beats
• bd, sn, hh have different mutipliers for no. beats
• sn has fixed rotation

deviate from strict midi clock to allow dragging and pushing drums

Instead of testing callbacks by ticking clock
test that ticking advances pulses and in another test
only pulse and check the callbacks

pattern {26}
bpm {130}

on two-and of second bar is a cracking noise
not for lower bpm, e.g. 120, so it seems to be a performance issue.

• replicate using a simpler pattern
• profile calls
• ???
• profit

to enforce proper tdd (see #10) make members private so these need to be unit tested otherwise

allows to add callbacks to ui events (poti change, button press)

patterns are now in 32nd

c.f. https://github.com/pichenettes/stmlib/blob/master/midi/midi.h

why not use int16 and just cast to uint16 when sending to i2s

could get rid of 0x7FFF being zero and dsp::volume calculation

• 2x MIDI (in/out)
• 2x stereo audio (in/out)
  • esp32 adc as audio input or extra i2s adc?
• as many potis and switches as possible

https://github.com/plerup/espsoftwareserial

no. too slow

https://arduino.stackexchange.com/questions/38567/softwareserial-too-slow-for-midi
esp. https://arduino.stackexchange.com/a/38575

#15 #16

like KSP

release, sustain, vol ??

#20