I'd love a hardware device that streamed the audio to an HTTP endpoint of my choosing, and played back whatever audio I sent. I can handle the rest myself, but the hardware side is tricky.
``` /* * @file streams-i2s-webserver_wav.ino * * This sketch reads sound data from I2S. The result is provided as WAV stream which can be listened to in a Web Browser * * @author Phil Schatzmann * @copyright GPLv3 /
#include <WiFi.h> #include "AudioTools.h"
const char ssid = "<stavros_ssid>"; const char *password = "stavros_pw"; AudioWAVServer server(ssid, password);
I2SStream i2sStream; ConverterFillLeftAndRight<int16_t> filler(LeftIsEmpty); // fill both channels - or change to RightIsEmpty
void setup() { Serial.begin(115200); AudioLogger::instance().begin(Serial, AudioLogger::Info);
// // Connect to Wi-Fi
Serial.println("Connecting to WiFi...");
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED)
{
delay(1000);
Serial.println("Connecting...");
}
Serial.println("Connected to WiFi");
// Print the IP address
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
// start i2s input with default configuration
Serial.println("starting I2S...");
auto config = i2sStream.defaultConfig(RX_MODE);
// working well
config.i2s_format = I2S_STD_FORMAT;
config.sample_rate = 44100; // INMP441 supports up to 44.1kHz
config.channels = 1; // INMP441 is mono
config.bits_per_sample = 16; // INMP441 is a 24-bit ADC
config.pin_ws = 19; // Adjust these pins according to your wiring
config.pin_bck = 18;
config.pin_data = 21;
config.use_apll = true; // Try with APLL for better clock stability
i2sStream.begin(config);
Serial.println("I2S started");
// start data sink
server.begin(i2sStream, config, &filler);// Arduino loop void loop() { // Handle new connections server.copy(); }
```
This code just listens to audio you record on a microphone (INMP441 MEMS microphone used here) and streams it to an endpoint of the microcontroller's IP address. If you would like more help on this give me a shout anytime. my email: akash at starmoon dot app