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Building Noise Canceling Headphones
Posted on Saturday, June 4, 2011   •   Category: Headphone Amplifiers

Building Noise Canceling Headphones

In today’s hectic and noisy world, we are all searching for a little peace and quiet. Well, you might not be able to slip off to a tranquil forest for an hour or two, but you can block out background noise with the Noise-Canceling Headphones. The theory behind this project is that by picking up ambient sound with a microphone and reproducing it out of phase, we can actively cancel or "null" out background noise. In fact, several commercially available devices perform the same function. However, by building your own headset, you can add features not otherwise available and have fun while doing it! Along with noise-features, the Active Noise-Canceling Headphones let you mix in an auxiliary line-level signal from a CD or tape player. That allows you to minimize background noise while quietly listening to music. The project also has a phase switch that will let you keep the microphone signals in phase, thus amplifying background sound. In addition, the design of the Noise-Canceling Headphones lends itself to several other interesting functions, which we will look at later.

     HiFI Headphone Amplifier
     Class A Headphone Amplifier
     100W HI-FI MOSFET Amplifier
     Hybrid Headphone Amplifier
     Miniature Headphone Amplifier
     Portable Tube Headphone Amp
     Class-A Headphone Amplifier
     USB Powered PC Headphone Amplifier
     Class A Headphone Amplifier
     Class-A 12AU7 Tube Headphone Amplifier
Building Noise Canceling Headphones

 

Build Accurate LC Meter and start making your own coils and inductors. This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils. LC Meter can measure inductances starting from 10nH - 1000nH, 1uH - 1000uH, 1mH - 100mH and capacitances from 0.1pF up to 900nF. The circuit includes an auto ranging and reset function to make sure the readings are as accurate as possible ... [more]



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