Audio and Video

Gaffa tape

Gaffer tape (also known as gaffer’s tape or gaff tape) is a heavy cotton cloth pressure-sensitive tape with strong adhesive and tensile properties. It is widely used in theatre, photography, film and television production. A common application for gaffer tape is securing cables to a stage floor, podium, or other surface, either for safety or

Remote powering video

Remote powering implies that the power equipment is not local but some distance away. It is an alternative to commercial power, which can be hard to get and/or expensive. Remote means that the powering and powered equipment are in separate buildings or at different external locations inside same building. This posting about remote powering in

Common audio cables

Cables are a critical component of any audio system. There are mainly two types of audio cables available in the market; balanced (two signal wires and a ground wire) and unbalanced (one signal wire and one ground wire). Signals in all types of wires are conveyed by the combination of voltage and current. Reducing analog

Videos about big audio systems

Here are some interesting videos related to PA and sound reinforcement systems. Wikipedia defines that a public address system (PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music. The

Bandwidth Versus Video Resolution – Tutorial – Maxim

https://www.maximintegrated.com/en/app-notes/index.mvp/id/750 This article from MAXIM discusses the key relationship between video resolution and the required bandwidth to accurately process and display that video signal. The equations and table address standard definition, NTSC and PAL, as well as high definition DTV standards. Computer display formats are also covered.

DOSbox runs old DOS software

This posting tells the story how I got a video made of my old computer demo from almost 25 years ago. The story of that computer demo told in Computer Demo: Bogus Party III Video by Bogus Device posting. That old program was designed to run on DOS operating system on a pretty old hardware.

Behringer B208D teardown

This is a teardown of Behringer B208D active PA speaker. Inside Here is input pre-amplifier Look inside power electronics metal box Inside here is swich mode power supply (mains to around +-27V) and amplifier board. Amplifier board has 160W class D amplifier chip (below board and possibly broken) for driving low frequency speaker element, 40W

Computer Demo: Bogus Party III Video by Bogus Device

This is a story goes back to around 25 years. This a a story of Bogus Party III Video by Bogus Device computer demo that I was making in 1993. The demoscene is an international computer art subculture focused on producing demos: self-contained, sometimes extremely small, computer programs that produce audio-visual presentations. The purpose of