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restoring a few doubles

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a few doubles are currently necessary, due to high speed of the control loops (see discord discussion).
This commit is contained in:
Frank 2022-07-04 12:34:32 +02:00
parent e2b7b228c5
commit 03dba4d7d0
1 changed files with 12 additions and 12 deletions
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24
usermods/audioreactive/audio_reactive.h
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@ -51,17 +51,17 @@ static uint8_t audioSyncEnabled = 0; // bit field: bit 0 - send, bit 1
// Note: in C++, "const" implies "static" - no need to explicitly declare everything as "static const"
//
#define AGC_NUM_PRESETS 3 // AGC presets: normal, vivid, lazy
const float agcSampleDecay[AGC_NUM_PRESETS] = { 0.9994f, 0.9985f, 0.9997f}; // decay factor for sampleMax, in case the current sample is below sampleMax
const double agcSampleDecay[AGC_NUM_PRESETS] = { 0.9994f, 0.9985f, 0.9997f}; // decay factor for sampleMax, in case the current sample is below sampleMax
const float agcZoneLow[AGC_NUM_PRESETS] = { 32, 28, 36}; // low volume emergency zone
const float agcZoneHigh[AGC_NUM_PRESETS] = { 240, 240, 248}; // high volume emergency zone
const float agcZoneStop[AGC_NUM_PRESETS] = { 336, 448, 304}; // disable AGC integrator if we get above this level
const float agcTarget0[AGC_NUM_PRESETS] = { 112, 144, 164}; // first AGC setPoint -> between 40% and 65%
const float agcTarget0Up[AGC_NUM_PRESETS] = { 88, 64, 116}; // setpoint switching value (a poor man's bang-bang)
const float agcTarget1[AGC_NUM_PRESETS] = { 220, 224, 216}; // second AGC setPoint -> around 85%
const float agcFollowFast[AGC_NUM_PRESETS] = { 1/192.f, 1/128.f, 1/256.f}; // quickly follow setpoint - ~0.15 sec
const float agcFollowSlow[AGC_NUM_PRESETS] = {1/6144.f,1/4096.f,1/8192.f}; // slowly follow setpoint - ~2-15 secs
const float agcControlKp[AGC_NUM_PRESETS] = { 0.6f, 1.5f, 0.65f}; // AGC - PI control, proportional gain parameter
const float agcControlKi[AGC_NUM_PRESETS] = { 1.7f, 1.85f, 1.2f}; // AGC - PI control, integral gain parameter
const double agcFollowFast[AGC_NUM_PRESETS] = { 1/192.f, 1/128.f, 1/256.f}; // quickly follow setpoint - ~0.15 sec
const double agcFollowSlow[AGC_NUM_PRESETS] = {1/6144.f,1/4096.f,1/8192.f}; // slowly follow setpoint - ~2-15 secs
const double agcControlKp[AGC_NUM_PRESETS] = { 0.6f, 1.5f, 0.65f}; // AGC - PI control, proportional gain parameter
const double agcControlKi[AGC_NUM_PRESETS] = { 1.7f, 1.85f, 1.2f}; // AGC - PI control, integral gain parameter
const float agcSampleSmooth[AGC_NUM_PRESETS] = { 1/12.f, 1/6.f, 1/16.f}; // smoothing factor for sampleAgc (use rawSampleAgc if you want the non-smoothed value)
// AGC presets end
@ -390,7 +390,7 @@ class AudioReactive : public Usermod {
bool udpSamplePeak = 0; // Boolean flag for peak. Set at the same tiem as samplePeak, but reset by transmitAudioData
int16_t micIn = 0; // Current sample starts with negative values and large values, which is why it's 16 bit signed
int16_t sampleRaw; // Current sample. Must only be updated ONCE!!! (amplified mic value by sampleGain and inputLevel; smoothed over 16 samples)
float sampleMax = 0.0f; // Max sample over a few seconds. Needed for AGC controler.
double sampleMax = 0.0; // Max sample over a few seconds. Needed for AGC controler.
float sampleReal = 0.0f; // "sampleRaw" as float, to provide bits that are lost otherwise (before amplification by sampleGain or inputLevel). Needed for AGC.
float sampleAvg = 0.0f; // Smoothed Average sampleRaw
float sampleAgc = 0.0f; // Our AGC sample
@ -406,7 +406,7 @@ class AudioReactive : public Usermod {
// used for AGC
uint8_t lastMode = 0; // last known effect mode
int last_soundAgc = -1;
float control_integrated = 0.0f; // persistent across calls to agcAvg(); "integrator control" = accumulated error
double control_integrated = 0.0; // persistent across calls to agcAvg(); "integrator control" = accumulated error
unsigned long last_update_time = 0;
unsigned long last_kick_time = 0;
uint8_t last_user_inputLevel = 0;
@ -526,7 +526,7 @@ class AudioReactive : public Usermod {
float control_error; // "control error" input for PI control
if (last_soundAgc != soundAgc)
control_integrated = 0.0f; // new preset - reset integrator
control_integrated = 0.0; // new preset - reset integrator
// For PI controller, we need to have a constant "frequency"
// so let's make sure that the control loop is not running at insane speed
@ -540,8 +540,8 @@ class AudioReactive : public Usermod {
//multAgcTemp = multAgc; // keep old control value (no change)
tmpAgc = 0;
// we need to "spin down" the intgrated error buffer
if (fabs(control_integrated) < 0.01f) control_integrated = 0.0f;
else control_integrated *= 0.91f;
if (fabs(control_integrated) < 0.01) control_integrated = 0.0;
else control_integrated *= 0.91;
} else {
// compute new setpoint
if (tmpAgc <= agcTarget0Up[AGC_preset])
@ -559,9 +559,9 @@ class AudioReactive : public Usermod {
if (((multAgcTemp > 0.085f) && (multAgcTemp < 6.5f)) //integrator anti-windup by clamping
&& (multAgc*sampleMax < agcZoneStop[AGC_preset])) //integrator ceiling (>140% of max)
control_integrated += control_error * 0.002f * 0.25f; // 2ms = intgration time; 0.25 for damping
control_integrated += control_error * 0.002 * 0.25; // 2ms = intgration time; 0.25 for damping
else
control_integrated *= 0.9f; // spin down that beasty integrator
control_integrated *= 0.9; // spin down that beasty integrator
// apply PI Control
tmpAgc = sampleReal * lastMultAgc; // check "zone" of the signal using previous gain