Audio and Video

OLED display is not dead

Organic light-emitting diodes (OLEDs) are solid-state devices composed of thin films of organic molecules that create light with the application of electricity. OLEDs are a promising technology for flat panel displays. Compared to standard LCDs (including those with LED backlighting), OLED displays offer better contrast ratios (no trouble producing ‘true’ black’), require no backlighting at

Look inside Logitech Squeezebox Boom

White paper: Logitech Squeezebox Boom audio design is an interesting in-depth look behind the design of an all-in-one network music player from one of its lead designers. This device includes amplifier and speakers and other music player electronics in one box. One of its lead designers tells the story. Image source:

High Speed Lightning Videos

Lightning Reveals Its Power in Slow Motion article on Wired has a series of videos that combines severe weather, electricity, and technology. The maker of those videos, Tom Warner, documents the powerful beauty of lightning with an array of optical and electromagnetic sensors. “Lightning is one of nature’s most spectacular phenomena,” says Warner. “I want


This is a really neat trick I just read about. LackRack is the ultimate, low-cost, high shininess solution for your modular datacenter-in-the-living-room. Its low-cost and perfect fit are great for mounting up to 8 U of 19″ hardware, such as switches (see below), or perhaps other 19″ gear. Featuring the LACK (side table) from Ikea,

Tour of the International Space Station

An HD Video Tour of the International Space Station is simple walkthrough of this incredible project and all its corners. This video tour of the International Space Station is an interesting video, but is has also some annoying things on it. It sometimes overuses picture in picture and superimposed images effects in the video. Just

High end vs. consumer electronics

All the good ideas have been gone in high end AV industry? Why work hard for something original when you can just license it and use your brand to warrant charging huge extra for the same electronics? Are high-end brands just becoming marketing and no real engineering or quality benefits… In earlier blog post there

Differential video amplifiers

Differential amplifier approach uses an operational Amplifier. Operational Amplifiers only amplify the difference between the two input lines. This method eliminates common mode noise between the incoming signals by making A-B=C, as only the difference between A & B are amplified. Operational amplifiers is maintain wide bandwidth signals throughout your system while eliminating ground loop

Wellcome to N-format war

The end of physical formats for movie and TV shows could be called digital convergence, a happy, wonderfully singular, unified digital world. Content moves seamlessly from your multifunction portable device to your TV, between your computers, and to every monitor and audio system and random networked appliance in between. This would be theoretically and technically

Microphone powering ideas

New Line Techtalk Phantom Supply web page shows how to build a very simple design for a phantom supply. Now since the question was for a simple phantom supply, fed by batteries, the choice was made to use two 9V batteries (since a lot of microphones can be run from phantom voltages as low as