Audio and Video

Transparent Car Video

Shell Corporation has an interesting advertisement for their Helix oil. Transparent Nissan 370Z is the star in this sweet engine oil ad. Shell Helix Ultra Transparent Car – The Making Of video shows you the ad and also gives you information how this is made. They use a plastic/pyrex model that simply illustrates how oil

DIY projectors

There are many plans for DIY video projectors on the net: Easy DIY iPod projector, $6 Ipod Nano Projector, DIY iPod Video Projector – Requires no Power or Disassembly of the iPod, Super Sleek iPod or Other Device Video Projector and Make an iPod Video Projector. This is a good opportunity to build a simple

Is H.264 a legal minefield?

H.264 use isn’t all free all the time. MPEG-LA is the industry group that licenses the H.264 patent portfolio to the likes of software companies, optical-disc duplicators, Blu-ray player makers, and others who have need to use H.264. MPEG LA licenses a portfolio of more than 1,000 H.264-related patents on behalf of 26 companies that

Unshielded RCA cable is bad design

Here is a bit long article about HIFI system interconnect cables. There are pages promoting use of different unshielded cable constructions for HIFI systems interconnections. But the truth is that unshielded RCA cable is bad design and should be avoided. This article tells the truth about unshielded RCA cables, why they are bad and how

About THX certification

THX began life as part of LucasFilm. The initial goals for THX was to ensure that movie audiences in theaters heard the same audio that sound engineers heard in the listening booth after the final audio mix. Eventually, that goal has mutated. The new THX idea was to ensure that home theater buffs heard the

Unbalanced to impedance balanced

Just about all professional equipment uses balanced audio lines, which, if properly executed, will eliminate the hum completely. They help especially with long interconnects where earth loops can be a real pain. Circuits driving balanced lines must themselves be balanced to maintain the benefits of balance. This may be achieved by differential signaling, transformer coupling

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: