Categories

Arduino realtime audio spectrum analyzer

Posted on Wednesday, November 24th, 2010 in Arduino, tools by the machinegeek

Paul Bishop has posted source code and the schematic for an audio spectrum analyzer based on the Atmega328/Arduino. The design takes input from a simple electret microphone, amplifies it through a transistor fed into the Arduino’s ADC input pin. The Arduino outputs video of  a 64 band audio spectrum analyzer through two external resistors which feed the video out to any display device handling NTSC video.

The amazing processing feats which can be achieved with this device never cease to amaze us.

This entry was posted on Wednesday, November 24th, 2010 at 2:48 pm and is filed under Arduino, tools. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “Arduino realtime audio spectrum analyzer”

  1. Matias says:

    I have an Arduino Uno and I do Arduino realtime audio spectrum analyzer,
    what steps I have to follow? how programos the arduino??

Leave a Reply

Notify me of followup comments via e-mail. You can also subscribe without commenting.

Recent Comments

  • Cyk: Well, this is an application that I'd solve with an Android smartphone. Used Moto G phones can be found on Ebay for ~€30, and thanks...
  • Noy: Yuuup
  • Vibhore: I'm waiting. *Fingers_crossed
  • KH: I guess this is a failed attempt at making a pass/fail cable tester out of discrete ICs. A single pass/fail LED is not that useful....
  • Max: Considering it only seems to test that all wires conduct, I'm not sure what exactly does this show you that 7 LEDs each powered through...