Any device sporting a chip and some form of communications protocol can be hacked – that’s almost as strong a law as those governing gravity. Besides audio and video data, there are a number of parallel protocols in HDMI that transmit more information than we’d expect. There is I2C configuration data, HDCP (High-bandwidth Digital Content →
The HDMI Forum has published a supplement to the HDMI standard. The new version has made HDMI 2.1a Amendment 1. This new release brings with it only one new feature: support for more powerful power feed to HDMI cable. The only new feature in the standard is known as HDMI Cable Power. HDMI cable has →
I saw in Facebook DIY audio group a question about suitable voltage divider resistance values to step down an amplifier’s output (approx 28vrms) to for example around 2.8v. The aim is to use the speaker outputs of an integrated amplifier or AV receiver to run an external power amplifier. Its obvious that a 10:1 ratio →
Transformers will only work with a changing current (AC). Transformer only works on AC and can’t be operated on DC i.e. it has been designed to be operated only and only on alternating current and voltage. The transformer works on the principle of mutual induction, for which current in one coil must change uniformly. The →
‘Mute’ button in conferencing apps may not actually mute your mic! The users of remote meeting software have typically a poor understanding of how the mute system works, falsely assuming that audio input is cut when they activate it. This is not always the case. You’re muted — or are you? Videoconferencing apps may listen →
Did you know than an audio equipment can cause “off gear distortion” on line level signals that are driving multiple pieces of audio gear? I have had situation where I had one CD player wired to inputs of two different amplifiers (Y-splitter cable). When both amplifiers were powered on, everything worked nicely. But when one →
The 2022 Winter Olympics, officially called the XXIV Olympic Winter Games and commonly known as Beijing 2022, is an ongoing international winter multi-sport event that is scheduled to officially open on 4 February 2022 and is taking place in Beijing, China. The 2022 Winter Olympics are scheduled to include a record 109 events over 15 →
Hackaday has spent several months in this series journeying through the world of audio. Now it’s time to descend into one of the simplest yet most controversial areas of audio reproduction. Every audio component, whether digital or analogue, must be connected into whatever system it is part of, and this is the job of audio →
Space Debris is a famous Amiga mod composed back in 1991. This is a short story about how the composer made the song, and what it was like to make music on the Amiga at the time. If you don’t know what “Amiga” or “mods” are, no worries, just read on at https://markuskaarlonen.com/space-debris Listen to →
There’s no doubt that the audio visual industry has proven its ability to survive and thrive in trying times. Global events have facilitated the rapid evolution of audio visual technologies, and these only continue to advance. Here are some audio visual trends for 2022 collected from many sources (click the link colored to text to →