Audio and Video

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

Demoscene – ASSEMBLY Summer 2018

https://www.assembly.org/summer18/demoscene Watch the demo competition live on Finnish national TV! The legendary Assembly demo competition will be shown live on national (Finnish) YLE TV2 channel on Saturday August 4 starting around midnight after the ROG Tournament CS:GO Finnish Championship 2018 Finals. You can view event also on-line: AssemblyTV hosts interviews, chats and of course the

Remote powering in audio

Remote powering implies that the power equipment is not local but some distance away.  This article is remote powering audio edition. It can be seen a continuation of my earlier Remote powering over communications cabling posting series. Microphone: Plug-in-power Plug-in power is designed to power electret microphones through same audio cable that carries audio. Most