我将麦克风和扬声器连接到 2 个 ESP32，并且能够使用 ESP32 从麦克风听到扬声器再现的我的声音。我也能够在他们之间发送音频信号，但我无法理解口语。我认为这是因为我正在从analogRead 函数发送当前值，并且由于 ESP Now 链接的数据速率低于 adc 采样率，因此传输中会丢失很多信息。

我尝试使用下面的代码创建一个包含 1000 个值的数组并一次发送一个数组，但它对我不起作用。感谢您的帮助，我需要在 2 个 ESP32 之间发送更高质量的音频。

#include <esp_now.h>
#include <WiFi.h>

// REPLACE WITH THE MAC Address of your receiver
uint8_t broadcastAddress[] = {0x7C,0x9E,0xBD,0x47,0x92,0x4C}; //MAC Address

float A;
const int Max = 1000;

//Define Sent Message
typedef struct test_message {
  float A[Max];
} test_message;

test_message tx; //Sent Message
test_message rx; // Received Message

// Transmitting Callback
void OnDataSent(const uint8_t *mac_addr,esp_now_send_status_t status) {
  char macStr[18];
  // Copies the sender mac address to a string
  snprintf(macStr,sizeof(macStr),"%02x:%02x:%02x:%02x:%02x:%02x:",mac_addr[0],mac_addr[1],mac_addr[2],mac_addr[3],mac_addr[4],mac_addr[5]);
}

// Receiving Callback
void OnDataRecv(const uint8_t * mac,const uint8_t *incomingData,int len) {
  memcpy(&rx,incomingData,sizeof(rx));
}

void setup() {
  Serial.begin(115200);
  // Set device as a Wi-Fi Station
  WiFi.mode(WIFI_STA);
  // Init ESP-NOW
  if (esp_now_init() != ESP_OK) {
   // Serial.println("Error initializing ESP-NOW");
    return;
  esp_now_register_recv_cb(OnDataRecv);
  }
  // Once ESPNow is successfully Init,we will register for Send CB to
  // get the status of Trasnmitted packet
  esp_now_register_send_cb(OnDataSent);
  
  // Register peer
  esp_now_peer_info_t peerInfo;
  memcpy(peerInfo.peer_addr,broadcastAddress,6);
  peerInfo.channel = 0;
  peerInfo.encrypt = false;
  
  // Add peer        
  if (esp_now_add_peer(&peerInfo) != ESP_OK){
   // Serial.println("Failed to add peer");
    return;
  }
  // Register for a callback function that will be called when data is received
  esp_now_register_recv_cb(OnDataRecv);
}

void loop() {
  for (int i=0; i<Max; i++){
  tx.A[i] = analogRead(35);
  }
  esp_err_t result = esp_now_send(0,(uint8_t *) &tx,sizeof(test_message));
  for (int i=0; i<Max; i++){
  dacWrite(25,rx.A[i]);
  Serial.println(rx.A[i]);
  }
}