Communicaton ESPNOW send-communicaton espnow rsv codec Sbc

[aqildad-create]

I RUN ABOVE EXAMPLE AND ADD MAC ADDRESSES , BUT NO COMMUNCATON SUCCESS .

/**

• @file example-serial-send.ino
• @author Phil Schatzmann
• @brief Sending encoded audio over ESPNow
• @Version 0.1
• @Date 2022-03-09
• @copyright Copyright (c) 2022
  */

#include "AudioTools.h"
#include "AudioLibs/Communication.h"
#include "AudioCodecs/CodecSBC.h"

uint16_t sample_rate = 32000;
uint8_t channels = 2; // The stream will have 2 channels
SineWaveGenerator<int16_t> sineWave( 32000); // subclass of SoundGenerator with max amplitude of 32000
GeneratedSoundStream<int16_t> sound( sineWave); // Stream generated from sine wave
ESPNowStream now;
EncodedAudioStream encoder(&now, new SBCEncoder()); // encode and write to ESP-now
StreamCopy copier(encoder, sound); // copies sound into i2s
const char *peers[] = {"0C:B8:15:C3:40:68"};

Sender code
void setup() {
Serial.begin(115200);
AudioLogger::instance().begin(Serial, AudioLogger::Warning);

auto cfg = now.defaultConfig();
cfg.mac_address = "94:E6:86:04:89:44";
now.begin(cfg);
now.addPeers(peers);

// Setup sine wave
auto cfgs = sineWave.defaultConfig();
cfgs.sample_rate = sample_rate;
cfgs.channels = channels;
cfgs.bits_per_sample = 16;
sineWave.begin(cfgs, N_B4);

// start encoder
encoder.begin(cfgs);

Serial.println("Sender started...");
}

void loop() {
copier.copy();
}

//--------receiver code
/**

• @file example-serial-receive.ino
• @author Phil Schatzmann
• @brief Receiving audio via ESPNow and decoding data to I2S
• @Version 0.1
• @Date 2022-03-09
• @copyright Copyright (c) 2022
  */

#include "AudioTools.h"
#include "AudioLibs/Communication.h"
#include "AudioCodecs/CodecSBC.h"
// #include "AudioLibs/AudioKit.h"

ESPNowStream now;
I2SStream out; // or AudioKitStream
EncodedAudioStream decoder(&out, new SBCDecoder(256)); // decode and write to I2S - ESP Now is limited to 256 bytes
StreamCopy copier(decoder, now);
const char *peers[] = {"94:E6:86:04:89:44"};

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

// setup esp-now
auto cfg = now.defaultConfig();
cfg.mac_address = "0C:B8:15:C3:40:68";
now.begin(cfg);
now.addPeers(peers);

// start I2S
Serial.println("starting I2S...");
auto config = out.defaultConfig(TX_MODE);
config.pin_ws = 2;
config.pin_bck = 15;
config.pin_data = 3;

out.begin(config);

// start decoder
decoder.begin();

Serial.println("Receiver started...");
}

void loop() {
copier.copy();
}

//--------sender log
17:38:20.493 ->
17:38:20.493 -> mac: 94:E6:86:04:89:44
17:38:20.493 -> Sender started...
17:48:47.088 -> [W] Communication.h : 225 - Write failed - retrying again
17:48:49.102 -> [W] Communication.h : 225 - Write failed - retrying again
17:48:51.119 -> [W] Communication.h : 225 - Write failed - retrying again
17:48:53.134 -> [W] Communication.h : 225 - Write failed - retrying again
17:48:55.150 -> [W] Communication.h : 225 - Write failed - retrying again
17:48:57.166 -> [W] Communication.h : 225 - Write failed - retrying again
17:48:59.213 -> [W] Communication.h : 225 - Write failed - retrying again
17:49:01.197 -> [W] Communication.h : 225 - Write failed - retrying again
17:49:03.212 -> [W] Communication.h : 225 - Write failed - retrying again
17:49:05.228 -> [W] Communication.h : 225 - Write failed - retrying again
17:49:07.275 -> [W] Communication.h : 225 - Write failed - retrying again

//receiver log

17:38:04.336 -> mac: 0C:B8:15:C3:40:68
17:38:04.336 -> starting I2S...
17:38:04.336 -> Receiver started...

[aqildad-create]

Sr , your library is working like a charm , it was my mistake in receiver of i2s pin assignment , now I can clearly listen the sine tone .

But sir now i change sine generator to microphone input (INMP441) , at receiver their is huge noise . (pre test : i2s webserver is successfully working ) I try with different sampling rate 8000 , 22050 , 32000 , 44100 but no success

below is my sender code

#include "AudioTools.h"
#include "AudioLibs/Communication.h"
#include "AudioCodecs/CodecSBC.h"

I2SStream i2sStream; // Access I2S as stream
//ConverterFillLeftAndRight<int32_t> filler(LeftIsEmpty); // fill both channels - or change to RightIsEmpty

uint16_t sample_rate = 32000;
uint8_t channels = 2; // The stream will have 2 channels

ESPNowStream now;
EncodedAudioStream encoder(&now, new SBCEncoder()); // encode and write to ESP-now
StreamCopy copier(encoder, i2sStream); // copies sound into i2s
const char *peers[] = {"0C:B8:15:C3:40:68"};

void setup() {
Serial.begin(115200);
// AudioLogger::instance().begin(Serial, AudioLogger::Warning);
AudioLogger::instance().begin(Serial, AudioLogger::Warning);
//AudioLogger::instance().begin(Serial, AudioLogger::Info);
auto cfg = now.defaultConfig();
cfg.mac_address = "94:E6:86:04:89:44";
now.begin(cfg);
now.addPeers(peers);

// start i2s input with default configuration
Serial.println("starting I2S...");
auto config = i2sStream.defaultConfig(RX_MODE);
config.i2s_format = I2S_STD_FORMAT; // if quality is bad change to I2S_LSB_FORMAT #23
config.sample_rate = sample_rate;//22050;
config.channels = 2;
config.bits_per_sample =32;
i2sStream.begin(config);
Serial.println("I2S started");

// start encoder
encoder.begin(config);

Serial.println("Sender started...");
}

void loop() {
copier.copy();
}

[aqildad-create]

is above possible with i2s microphone (INMP441) ?

I2s-> SBC encoder -> espnow -> SBC decoder -> i2S DAC

[pschatzmann]

I don't see any reason why this should not work. Just check the SBC specification about the supported audio values

[aqildad-create]

apology if I am missing document.
from were i will get SBC supported audio values ? I google for it but cant find related document ,

And which i2s microphone you use for your testing , i have INMP441 , does this make any difference ?

[pschatzmann]

The INMP441 creates noise on one channel if you use it with 16 bits. So you would need to filter that out or use 32 bits and convert them to 16 bits
https://en.wikipedia.org/wiki/SBC_(codec)
https://pschatzmann.github.io/arduino-audio-tools/classaudio__tools_1_1_s_b_c_encoder.html

[aqildad-create]

yes , you are correct , when was I testing i2s webserver i get the same nose when was using 16bts , but when I change it to 32 bit then i get clear audio on webserver , Now i am using same 32 bit but still its very distorted in receiver after ESPnow ,

is it necessary to use 16 bit , first use 32 bit and then convert to 16 bit , in web server was using 32 bit and it work fine , same here I cant use use 32 bit directly ?

THS IS SENDER CODE and receiver code is same as communication SBC decoder .

#include "AudioTools.h"
#include "AudioLibs/Communication.h"
#include "AudioCodecs/CodecSBC.h"

I2SStream i2sStream; // Access I2S as stream

uint16_t sample_rate = 32000;
uint8_t channels = 2; // The stream will have 2 channels

ESPNowStream now;
EncodedAudioStream encoder(&now, new SBCEncoder()); // encode and write to ESP-now
StreamCopy copier(encoder, i2sStream); // copies sound into i2s
const char *peers[] = {"0C:B8:15:C3:40:68"};

void setup() {
Serial.begin(115200);
// AudioLogger::instance().begin(Serial, AudioLogger::Warning);
AudioLogger::instance().begin(Serial, AudioLogger::Warning);
//AudioLogger::instance().begin(Serial, AudioLogger::Info);
auto cfg = now.defaultConfig();
cfg.mac_address = "94:E6:86:04:89:44";
now.begin(cfg);
now.addPeers(peers);

// start i2s input with default configuration
Serial.println("starting I2S...");
auto config = i2sStream.defaultConfig(RX_MODE);
config.i2s_format = I2S_STD_FORMAT; // if quality is bad change to I2S_LSB_FORMAT #23
config.sample_rate = sample_rate;//22050;
config.channels = 2;
config.bits_per_sample =32;
i2sStream.begin(config);
Serial.println("I2S started");

// start encoder
encoder.begin(config);

Serial.println("Sender started...");
}

void loop() {
copier.copy();
}

[pschatzmann]

You can't use 32bit values with the codec!
You can use a FormatConverterStream Class to convert 32 to 16 bits

[aqildad-create]

FormatConverterStream . . give me error

Is their any example were you used FormatConverterStream ?

[pschatzmann]

Just read the error message. This class must not have any template!

[aqildad-create]

Sir , please
Is their any example were you used FormatConverterStream ?

[aqildad-create]

I try to use ChannelFormatConverterStreamT . It compile but i am getting same nose in receiver . .

ChannelFormatConverterStreamT<int16_t> conv(i2sStream);
StreamCopy copier(encoder, conv); // copies sound into i2s

I Also search in your GITHUB repository you never use in any examples this FormatConverterStream for your conversion . can you please share any example related to this ?

Also once you said the latest library also support 24 bit i2s stream and if 24bit values support the codec! , then n ths case may be we don't need conversion ?

Further which i2s microphone you used for codecs ?

I also try some thing like this but it did not help either
FormatConverterStream conv(int32_t i2sStream ,int16_t);

[aqildad-create]

Sir if you pls help me in converting 32bit to 16 bit for encoder , i will really thank full , as i tried all my attempts .

Or if you have related example i will really than full

[pschatzmann]

I have extended the documentation: https://github.com/pschatzmann/arduino-audio-tools/wiki/Converting-the-Data-Format

Please note this uses the functionality of the latest version. In your installed version you will have the following differences:

• AudioInfo is called AudioBaseInfo
• Passing arguments in the constructor to AudioBaseInfo is not supported

These changes should make the skeches shorter and clearer...

[aqildad-create]

yes it look nice and show passionate about your work.

after fresh library download i run example * @brief Sending encoded audio over ESPNow it will not work directly ? gives below errors .

[pschatzmann]

Obviously as spelling mistake: has been corrected just now

[aqildad-create]

Below code i try for i2s microphone INMP441 . receiver is silent ,No audio Out .
also i am confuse about what is resize and why it is zero in log
[I] Buffers.h : 289 - resize: 0
[I] Buffers.h : 289 - resize: 0

i thing in sender their is some missing part .

Pre test :
1: Receiver code OK BECAUSE LSTEN SINETONE WHEN RUN BASIC EXAMPLE
@brief Receiving audio via ESPNow and decoding data toI2S
2: I2s SERVER WORKNG

#include "AudioTools.h"
#include "AudioLibs/Communication.h"
#include "AudioCodecs/CodecSBC.h"
I2SStream i2sStream; // Access I2S as stream
uint16_t sample_rate = 44100;
AudioInfo to(44100, 2, 16);
FormatConverterStream conv(i2sStream);
ESPNowStream now;
EncodedAudioStream encoder(&now, new SBCEncoder()); // encode and write to ESP-now

StreamCopy copier(encoder, conv);

const char *peers[] = {"0C:B8:15:C3:40:68"};
void setup() {
Serial.begin(115200);
AudioLogger::instance().begin(Serial, AudioLogger::Info);

auto cfg = now.defaultConfig();
cfg.mac_address = "94:E6:86:04:89:44";

now.begin(cfg);
now.addPeers(peers);

// start i2s input with default configuration
Serial.println("starting I2S...");
auto config = i2sStream.defaultConfig(RX_MODE);
config.i2s_format = I2S_STD_FORMAT; // if quality is bad change to I2S_LSB_FORMAT #23
config.sample_rate = sample_rate;//22050;
config.channels = 2;
config.bits_per_sample =32;
i2sStream.begin(config);
Serial.println("I2S started");
conv.begin(config, to);
// start encoder
encoder.begin(to);

Serial.println("Sender started...");
}

void loop() {
copier.copy();
}

///////////////////////////

mac: 94:E6:86:04:89:44
starting I2S...
I2S started
Sender started...
[I] Communication.h : 107 - setting mac 94:E6:86:04:89:44

mac: 94:E6:86:04:89:44
[I] Communication.h : 310 - esp_now_init: 94:E6:86:04:89:44
[I] Communication.h : 161 - addPeer: 0c:b8:15:c3:40:68
starting I2S...
[I] I2SConfig.h : 106 - rx/tx mode: RX_MODE
[I] I2SConfig.h : 107 - port_no: 0
[I] I2SConfig.h : 108 - is_master: Master
[I] I2SConfig.h : 109 - sample rate: 44100
[I] I2SConfig.h : 110 - bits per sample: 32
[I] I2SConfig.h : 111 - number of channels: 2
[I] I2SConfig.h : 112 - i2s_format: I2S_STD_FORMAT
[I] I2SConfig.h : 114 - auto_clear: false
[I] I2SConfig.h : 116 - use_apll: true
[I] I2SConfig.h : 121 - buffer_count:6
[I] I2SConfig.h : 122 - buffer_size:512
[I] I2SConfig.h : 126 - pin_bck: 14
[I] I2SConfig.h : 128 - pin_ws: 15
[I] I2SConfig.h : 130 - pin_data: 32
I2S started
[I] AudioTypes.h : 78 - sample_rate: 44100
[I] AudioTypes.h : 79 - channels: 2
[I] AudioTypes.h : 80 - bits_per_sample: 16
[I] Buffers.h : 289 - resize: 0
[I] Buffers.h : 289 - resize: 0
[I] CodecSBC.h : 247 - virtual void audio_tools::SBCEncoder::begin()
Sender started...

[pschatzmann]

#745

[pschatzmann]

#745