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--- amc2021:groupl:code:sound_detection [2021/09/03 01:44] – created kshama001
+++ amc2021:groupl:code:sound_detection [2023/01/05 14:38] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ===== For noise disturbance detection in the environment =====
+This code monitors the sound intensity using an LM393 sensor connected to an Arduino UNO board.
+The used sensor has only a digital output. Therefore, the number of times the sensor detects a sound is summed up over a sampling time called "SAMPLE_TIME". Then the sum called "sampleBufferValue" is printed on a Serial Monitor and visualized with the Serial Plotter.
+Additionally, the code allows communication with a LED to provide a visual alarm if the "sampleBufferValue" surpasses a preset Threshold.
+Regarding the digital outputs, 0 means silence and 1 means noise.
-<code>
+Detailed explanation is given in the [[amc2021:groupl:video:start|video tutorial]]
-/* This code is meant to monitor the sound intensity using LM393 sensor connected to Arduino UNO board.
-//The used sensor has only a digital output. Therefore, the number of times the sensor detects a sound is summed up over a sampling time called "SAMPLE_TIME".
-//Then the sum called "sampleBufferValue" is printed on a Serial Monitor (laptop), and visualized with the Serial Plotter.
-// The code allows to communicate  with a LED in order to provide a visual alarm if the "sampleBufferValue" surpasses a preset Threshold  "Threshold" */
-// 0 means silence and 1 means noise
- const int OUT_PIN = 12;          // The OUTPUT of the sound sensor is connected to the digital pin D12 of the Arduino
+<file c++ Sound_Detection.ino>
- const int SAMPLE_TIME = 10;      // The sampling time in milliseconds,  can be set differently if required
- const int Threshold = 90;       // Threshold on decibel value for LED switching ON, the value has been optimized with respect to the used sampling time (900 cumulative digital counts ≈ 90 dB from "Schall")
+ const int OUT_PIN = 12;    // The OUTPUT of the sound sensor is connected to the digital pin D12 of the Arduino
+ const int SAMPLE_TIME = 10;// The sampling time in milliseconds,  can be set differently if required
+ const int Threshold = 90;  // Threshold on decibel value for LED switching ON, the value has been optimized with respect to
+//the used sampling time (900 cumulative digital counts ≈ 90 dB from "Schall")
  unsigned long millisCurrent;     // current time
@@ Line 38: / Line 40: @@
   sampleBufferValue++;                       //increments the sum variable by 1
   }
-   if (millisElapsed > SAMPLE_TIME) {       //if the elapsed time surpasses the sampling time, print the sampleBufferValue and test threshold for alarm
+   if (millisElapsed > SAMPLE_TIME) {       //if the elapsed time surpasses the sampling time,
+   //print the sampleBufferValue and test threshold for alarm
-   dB = 0.0666 *(sampleBufferValue) + 30.223; //linear regression to calculate the decibel value based of the rough calibration of the sensor response
+   dB = 0.0666 *(sampleBufferValue) + 30.223; //linear regression to calculate the decibel value based of
+   //the rough calibration of the sensor response
   Serial.println(dB);                        // print decibel values on the Serial Monitor
   Serial.print("dB");                        // print sound unit decibel
@@ Line 59: / Line 63: @@
 }
-</code>
+</file>
+[[amc2021:groupl:report:start|Back to report]]