Research team at City University of Hong Kong (CityU) has discovered a new type of sound wave: The airborne sound wave vibrates transversely and carries both spin and orbital angular momentum like light does. The findings shattered scientists’ previous beliefs about the sound wave. “While the airborne sound is a longitudinal wave in usual cases, →
Happy Max Headroom signal hijacking day!! https://en.m.wikipedia.org/wiki/Max_Headroom_signal_hijacking The Max Headroom signal hijacking occurred on the night of November 22, 1987, when the television broadcasts of two stations in Chicago, Illinois, United States, were hijacked in an act of broadcast piracy by a video of an unidentified person wearing a Max Headroom mask and costume. According →
It seems that he quality of video cables sold in EU should be much better than it is now. I am not talking about mechanical strength or ability to transfer signal through, but the electromagnetic compatibility. The Swedish Electrical Safety Agency, together with other authorities within the EU, has tested HDMI and antenna cables. EMC →
The 15 Biggest Event AV Mistakes and How to Avoid Them https://helloendless.com/av-mistakes/ AV can make or break your event. Great AV and your event will run seamlessly. On the other hand, event AV mistakes can leave your guests wishing they never came and can make your event the talk of the town for all the →
SDI is a one-way, multiplexed protocol designed to carry the highest quality video, audio and metadata over a coaxial cable or fiber. SDI is a professional video signal that is preferred in production environments because of its longer range (up to 300 feet) and reliability. If you’re in an environment in which your cable could →
Here is my newest build: Microphone wiring tester. This tester will turn on LED when microphone wiring is OK and phantom power is turned on. If there is any common problem, LED will stay off. This circuit will detect ground connected to wrong pin, broken wires that make no contact and short circuit between wires. →
After I posted my plans for XLR cable tester to Facebook audio DUY group, there was discussion on similar circuits other people has made. Steve Smith wrote (put here with his permission): “If you’re into making your own stuff, this will show up any fault with a mic cable when connected to phantom power. Three →
The microphone of the beast? Depends on the culture. We’ve all heard about the infamous number 666, which is rather cryptically referred to as the “number of the beast” in the New Testament, and has more recently become known as the number of the Antichrist. In the Bible, 666 is also the number of talents →
Behringer Cable Tester CT100 is a pretty nice and cheap cable tester for all kinds of audio cables.The CT100 accepts many type of cable you might use in a recording or live performance situation: XLR, mono and TRS phone (¼”, 1⁄8″, TT), RCA and even MIDI. here are three operating modes: Cable Test, installed Cable →
The Western Electric Model 500 and its subsequent variants were so ubiquitous that you almost couldn’t go anywhere without seeing one, especially in the United States. You have seen and heard this literal fixture of American life phone on countless of TV series and movies. Unfortunately many producers have been a little lazy and did →