Ground loop elimination in video systems does not always ask for a complete isolation of the grounds. There are passive hum suppressor transformers that will very effectively remove the hum from the video signal, but do not affect the video signal otherwise. Those special transformers act like a common mode coils, which stop the annoying →
RC filter or amplifier’s lowpass filter at the input of a delta-sigma ADC is normally put there to reduce noise. But sometimes adding a filter can produce a noisier digital output than without that filter. Using an analog filter to inject noise article tells that it is as easy to eliminate higher-frequency noise with an →
Researches are developing a new generation of contact lenses built with very small circuits and LEDs. They promises bionic eyesight in the future. Bionanotechnology researcher Babak A Parviz writes about his research toward producing a computer interface in a contact lens at IEEE Spectrum article Augmented Reality in a Contact Lens. The author states that, →
3D Projection on buildings video at http://www.loodzwaar.com/2009/07/21/3d-projection-media/ shows amazing visuals that can be made by projecting 3D graphics to buildings. Take a look at this video. →
Power and Grounding for Audio and Audio/Video Systems – A White Paper for the Real World is a “White Paper” that attempts to cut through the confusion and set out a collection of good engineering practice that is both safe and effective. This 37 page technical document is worth to read for everybody who works →
Learn how to roll audio cables to avoid tangling. There are several good videos on Internet which tech you how to do that. How to Set Up PA Systems : How to Roll Audio Cables video gives you instructions how to roll audio cables to avoid tangling and tips on PA sound system setup.V1 Cable →
EDN blog articlwe HDMI cables for $2 or $600? mentions article Why are HDMI cables so expensive?. In this article product researchers find little difference between a $10 and a $140 HDMI cable. The result was that the expensive cables may be made with better materials, but they don�t perform digital transmission any better than →
This is almost a practical joke. This is potentially the best and wrongest multimedia device ever invented. Horse Bazaar is a pub in Melbourne Australia that has a urinal with a rear projector. This technology boasts that it makes possible that you don’t miss a single second of a game when you have to pee. →
This is a quick picture report on my technology tour at Assembly Summer 2009 festival and AssemblyTV studios. This is view to the main party hall that hosts thousands of people with their computers. Every computer place has network Ethernet network connection. This is the main show control center. On back of the picture on →
Assembly TV broadcasts TV program from Assembly computer festival starting Thursday 6. August 2009 in many channels (Internet, cable TV, DVB-H mobile television, 3G mobile video etc.). The broadcast has for many years contained Scene Quiz Show (the name has varied somewhat over years). It involves three contestants answering questions related to the event, demoscene →