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sound-direction-tester-42431d-en.md

This project makes finding the general direction of sound easy. The Arduino drives to LEDs to indicate which of two microphones is receiving an audible sound.

If both microphone sensors detect sound both (left and right) LEDs light indicating that both microphones have detected sound. If one microphone sensor (left or right) detects sound, then the corresponding LED (left or right) will light up. If both microphone sensors detect sound then both LEDs will light up.

For more information visit https://clydelettsome.com/blog/2019/08/15/my-weekend-project-sound-direction-tester/

EXPANDED TECHNICAL DETAILS

Acoustic Localization Logic

This project uses the speed-of-sound difference between two points to identify where a noise originated.

  • Microphone Array: Features two high-gain Electret Microphone modules placed at a specific distance apart. The Arduino uses high-speed analog sampling or digital interrupts to measure the "Time of Arrival" (ToA) of a loud sound.
  • Phase Detection: By calculating the microsecond delay between the two microphones, the Arduino can determine if the sound came from the Left, Right, or Center.

Visual Feedback

  • LED Indicators: A series of LEDs (pointing left, right, and center) illuminate to show the detected direction. This is a foundational project for building sound-tracking robotic heads or security cameras.

ข้อมูล Frontmatter ดั้งเดิม 

title: "Sound Direction Tester"
description: "In this video, I test two DAOKI microphone sensors with my Arduino Uno to create a sound direction tester."
author: "lbf20012001"
category: "Audio & Sound"
tags:
  - "sound direction finder"
  - "audio detector"
  - "sound finder"
views: 19510
likes: 4
price: 1499
difficulty: "Easy"
components:
  - "1x Breadboard, 830 Tie Points"
  - "1x Arduino UNO"
  - "1x Jumper wires (generic)"
  - "1x Extraction Tool, 6 Piece Screw Extractor & Screwdriver Set"
  - "2x 5 mm LED: Red"
  - "2x Resistor 330 ohm"
  - "2x DAOKI High Sensitivity Sound Microphone Sensor Detection Module For Arduino AVR PIC"
  - "1x USB-A to B Cable"
tools: []
apps:
  - "1x Arduino IDE"
downloadableFiles:
  - "https://projects.arduinocontent.cc/e64dedb2-e8c6-4e19-a842-26fe10c77161.ino"
documentationLinks: []
passwordHash: "bd5131cf6cd9b97a3aa19b1bbac484cd7e19f19b0cacf416a8200b262d32162d"
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seoDescription: "Create a Sound Direction Tester using Arduino Uno and DAOKI microphone sensors to detect sound source direction."
videoLinks:
  - "https://www.youtube.com/embed/XrXEaFRpSsg"
heroImage: "https://cdn.jsdelivr.net/gh/bigboxthailand/arduino-assets@main/images/projects/sound-direction-tester-42431d_cover.jpg"
lang: "en"