I want to create sound effect like hall, Big room, etc for use in am using Echo (by changing its parameters ) but it gives error continuously. Please help me

[SandeepJagdev]

here is my code:
/**

• @file basic-a2dp-audiokit.ino
• @brief see https://github.com/pschatzmann/arduino-audio-tools/blob/main/examples/examples-audiokit/basic-a2dp-audiokit/README.md
• @author Phil Schatzmann
• @copyright GPLv3
  */

#include "AudioTools.h"
#include "AudioLibs/AudioKit.h"
#include "AudioLibs/AudioA2DP.h"

BluetoothA2DPSink a2dp_sink;
AudioKitStream kit;
const int sample_rate = 44100;
const int channels = 1;
const int bits_per_sample = 16;

uint16_t duration_ms = 1000;
float depth = 0.5;
float feedbackAmount = 0.5;
uint32_t sampleRate = 44100;
bool zeroIfBufferEmpty = false;

// Effects
Delay dly(duration_ms, depth,feedbackAmount,sampleRate,zeroIfBufferEmpty);
// Audio
//AudioKitStream kit; // Access I2S as stream
AudioEffects<GeneratorFromStream<effect_t>> effects(kit, channels , 1.0); // apply effects on kit
GeneratedSoundStream<int16_t> in(effects);
StreamCopy copier(kit, in); // copy in to kit

// Write data to AudioKit in callback
void read_data_stream(const uint8_t *data, uint32_t length) {
in.write(data, length);
}

void setup() {
Serial.begin(115200);
AudioLogger::instance().begin(Serial, AudioLogger::Info);

// setup output
auto cfg = kit.defaultConfig(TX_MODE);
cfg.sd_active = false;
kit.begin(cfg);
dly.setActive(1);
effects.addEffect(dly);

// register callback
a2dp_sink.set_stream_reader(read_data_stream, false);
a2dp_sink.start("AudioKit");
}

void loop() {
// kit.processActions();
copier.copy();
}

[pschatzmann]

I suggest you build your output chain using an AudioEffectStream and then just write to it in the callback.

[SandeepJagdev]

any example??

[SandeepJagdev]

Thanks a lot . now it is working after two days of work.