The Digital Sketchbook Arduino Frequency Measurement Library

Posted on Feb 7, 2014

software on my MacBook Pro - such as the aforementioned Laidman & Katsura `s WaveWindow - WaveWindow is a software oscilloscope. It`s useful for anyone who works with sound on the Mac; it`s educational and fun to play with.  and Faberacoustical `s Signal Scope - Oscilloscope - Digitize and visualize multiple waveforms  and FFT Analyzer - Analy

The Digital Sketchbook Arduino Frequency Measurement Library
Click here to download the full size of the above Circuit.

ze narrowband spectral content. 16 signals at a time. ; software on my iPod Touch such as Oscilloscope (there`s a hardware hack required to create an audio line in - by cutting up and soldering sockets onto a cheap iPhone headset) - though I`ve just found out that the Project Hijack board I`ve been wanting to try out for a while - HiJack is a hardware/software platform for creating cubic-inch sensor peripherals for the mobile phone. HiJack devices harvest power and use bandwidth from the mobile phone`s headset interface. The HiJack platform enables a new class of small and cheap phone-centric sensor peripherals that support plug-and-play operation. HiJack has been tested with the iPhone 3G/3GS/4G, iPod Touch, and iPad devices.  is now available as part of the Hijack Development Pack from Seeed Studio for $79; and my favoured DIY solution - the Academy of Media Arts Cologne: Laboratory for Experimental Computer Science: labIII Frequency Measurement Library For frequency measurement in the audio or sub audio range the determination of the signal period length delivers the most accurate results. The architecture of the ATMEGA chip provides a special Counter and Capture unit which is designed todo this job with a high precision.  particulalry since Compared to a Frequency Counter Library published here before, this method delivers a higher accuracy and speed in the range below 20 KHz.  it seemed an ideal solution. Following...

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