Differences

This shows you the differences between two versions of the page.

--- amc2021:groupl:code:sound_detection [2021/09/04 13:51] – leen001
+++ amc2021:groupl:code:sound_detection [2023/01/05 14:38] (current) – external edit 127.0.0.1
@@ Line 2: / Line 2: @@
 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 (laptop) and visualized with the Serial Plotter.
+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.
@@ Line 9: / Line 9: @@
-<code>
+<file c++ Sound_Detection.ino>
- const int OUT_PIN = 12;          // The OUTPUT of the sound sensor is connected to the digital pin D12 of the Arduino
+ 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 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 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 39: / 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 60: / Line 63: @@
 }
-</code>
+</file>
+[[amc2021:groupl:report:start|Back to report]]