* remove double Wire.begin() - Wire cannot be re-initialized; its already started by pinManager.joinWire()
* Only use global I2C pins; make sure that audireactive I2C settings are aligned with global I2C pins
* minor cleanup
* remove I2C pins from AudioSource::initialize()
Note to self: sdaPin, sclPin are just dummy values now, good for UI consistency, but unused otherwise. Could be removed.
* it seems that `WiFiUDP.flsuh()` does something completely different from 8266, and its actually causing WLED to stall on UI calls. So not usable on 8266.
* fixing a few compiler warnings about "comparing signed and unsigned"
NB: its a hotfix, we have to check if there are other problems on 8266. Also its definitely ugly, but it helps as a band aid.
* it seems that `WiFiUDP.flsuh()` does something completely different from 8266, and its actually causing WLED to stall on UI calls. So not usable on 8266.
* fixing a few compiler warnings about "comparing signed and unsigned"
NB: its a hotfix, we have to check if there are other problems on 8266. Also its definitely ugly, but it helps as a band aid.
* DC blocker: use higher quality filtering on boards with FPU (-S3 and classic esp32)
* experimental: build option to increase audio task priority - reduces latency
The "Major Peak" (for double-notes effects) was computed on the raw FFT results.
However the human ear is more sensitive to higher frequencies (pink noise profile).
This code change considers human ear properties for major peak computations.
Effects like "freqmap" will look much more vivid afterwards, as higher frequencies will now have a stronger influence (harmonics are still suppressed properly).
* re-enabled old detector which does not detect beats. However something bad may still be better than nothing...
* fixed a typo in RipplePeak and Waterfall effect, which cased wrong configuration of the peak detector.
resolves https://github.com/MoonModules/WLED/issues/43
"sound pressure" for line-in was always close to max - which is expected, because the ADC chip utilize the full 24/16bit sample range.
The new calculation leads to some more "movement".
* 40Hz low-cut and DC blocker filter - will remove any signal offsets and also removes rumbling noise up to 12db
* DC blocker set as default for all sources (prerequisite for later measuring sound pressure)
additional filtering options are in the making :-)
