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Fix for ArduinoFFT

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This commit is contained in:
Blaz Kristan 2024-03-07 20:52:18 +01:00
parent c0beb621e2
commit b305fd8865
2 changed files with 11 additions and 37 deletions
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6
platformio.ini
View File

@ -172,7 +172,7 @@ lib_deps =
# SHT85
;robtillaart/SHT85@~0.3.3
# Audioreactive usermod
;https://github.com/kosme/arduinoFFT#develop @ ^1.9.2
;kosme/arduinoFFT @ 2.0.0
extra_scripts = ${scripts_defaults.extra_scripts}
@ -222,8 +222,8 @@ lib_deps =
https://github.com/pbolduc/AsyncTCP.git @ 1.2.0
${env.lib_deps}
# additional build flags for audioreactive
AR_build_flags = -D USERMOD_AUDIOREACTIVE -D UM_AUDIOREACTIVE_USE_NEW_FFT
AR_lib_deps = https://github.com/kosme/arduinoFFT#develop @ ^1.9.2
AR_build_flags = -D USERMOD_AUDIOREACTIVE
AR_lib_deps = kosme/arduinoFFT @ 2.0.0
[esp32_idf_V4]
;; experimental build environment for ESP32 using ESP-IDF 4.4.x / arduino-esp32 v2.0.5

42
usermods/audioreactive/audio_reactive.h
View File

@ -183,31 +183,20 @@ constexpr uint16_t samplesFFT_2 = 256; // meaningfull part of FFT resul
// These are the input and output vectors. Input vectors receive computed results from FFT.
static float vReal[samplesFFT] = {0.0f}; // FFT sample inputs / freq output - these are our raw result bins
static float vImag[samplesFFT] = {0.0f}; // imaginary parts
#ifdef UM_AUDIOREACTIVE_USE_NEW_FFT
static float windowWeighingFactors[samplesFFT] = {0.0f};
#endif
// Create FFT object
#ifdef UM_AUDIOREACTIVE_USE_NEW_FFT
// lib_deps += https://github.com/kosme/arduinoFFT#develop @ 1.9.2
// these options actually cause slow-downs on all esp32 processors, don't use them.
// #define FFT_SPEED_OVER_PRECISION // enables use of reciprocals (1/x etc) - not faster on ESP32
// #define FFT_SQRT_APPROXIMATION // enables "quake3" style inverse sqrt - slower on ESP32
// Below options are forcing ArduinoFFT to use sqrtf() instead of sqrt()
#define sqrt(x) sqrtf(x) // little hack that reduces FFT time by 10-50% on ESP32
#define sqrt_internal sqrtf // see https://github.com/kosme/arduinoFFT/pull/83
#else
// around 40% slower on -S2
// lib_deps += https://github.com/blazoncek/arduinoFFT.git
#endif
// lib_deps += https://github.com/kosme/arduinoFFT#develop @ 1.9.2
// these options actually cause slow-downs on all esp32 processors, don't use them.
// #define FFT_SPEED_OVER_PRECISION // enables use of reciprocals (1/x etc) - not faster on ESP32
// #define FFT_SQRT_APPROXIMATION // enables "quake3" style inverse sqrt - slower on ESP32
// Below options are forcing ArduinoFFT to use sqrtf() instead of sqrt()
#define sqrt(x) sqrtf(x) // little hack that reduces FFT time by 10-50% on ESP32
#define sqrt_internal sqrtf // see https://github.com/kosme/arduinoFFT/pull/83
#include <arduinoFFT.h>
#ifdef UM_AUDIOREACTIVE_USE_NEW_FFT
static ArduinoFFT<float> FFT = ArduinoFFT<float>( vReal, vImag, samplesFFT, SAMPLE_RATE, windowWeighingFactors);
#else
static arduinoFFT FFT = arduinoFFT(vReal, vImag, samplesFFT, SAMPLE_RATE);
#endif
// Helper functions
@ -288,28 +277,13 @@ void FFTcode(void * parameter)
#endif
// run FFT (takes 3-5ms on ESP32, ~12ms on ESP32-S2)
#ifdef UM_AUDIOREACTIVE_USE_NEW_FFT
FFT.dcRemoval(); // remove DC offset
FFT.windowing( FFTWindow::Flat_top, FFTDirection::Forward); // Weigh data using "Flat Top" function - better amplitude accuracy
//FFT.windowing(FFTWindow::Blackman_Harris, FFTDirection::Forward); // Weigh data using "Blackman- Harris" window - sharp peaks due to excellent sideband rejection
FFT.compute( FFTDirection::Forward ); // Compute FFT
FFT.complexToMagnitude(); // Compute magnitudes
#else
FFT.DCRemoval(); // let FFT lib remove DC component, so we don't need to care about this in getSamples()
//FFT.Windowing( FFT_WIN_TYP_HAMMING, FFT_FORWARD ); // Weigh data - standard Hamming window
//FFT.Windowing( FFT_WIN_TYP_BLACKMAN, FFT_FORWARD ); // Blackman window - better side freq rejection
//FFT.Windowing( FFT_WIN_TYP_BLACKMAN_HARRIS, FFT_FORWARD );// Blackman-Harris - excellent sideband rejection
FFT.Windowing( FFT_WIN_TYP_FLT_TOP, FFT_FORWARD ); // Flat Top Window - better amplitude accuracy
FFT.Compute( FFT_FORWARD ); // Compute FFT
FFT.ComplexToMagnitude(); // Compute magnitudes
#endif
#ifdef UM_AUDIOREACTIVE_USE_NEW_FFT
FFT.majorPeak(FFT_MajorPeak, FFT_Magnitude); // let the effects know which freq was most dominant
#else
FFT.MajorPeak(&FFT_MajorPeak, &FFT_Magnitude); // let the effects know which freq was most dominant
#endif
FFT.majorPeak(&FFT_MajorPeak, &FFT_Magnitude); // let the effects know which freq was most dominant
FFT_MajorPeak = constrain(FFT_MajorPeak, 1.0f, 11025.0f); // restrict value to range expected by effects
#if defined(WLED_DEBUG) || defined(SR_DEBUG)