Audio and Video

http://www.cbc.ca/newsblogs/yourcommunity/2014/10/taylor-swift-accidentally-releases-8-seconds-of-white-noise-tops-canadian-itunes-chart.html What does this tell about state of pop-music industry? When a track containing nothing but eight seconds of white noise was accidentally released under the album’s name on Tuesday morning, it shot to the top of Canada’s iTunes chart almost immediately. It’s likely that many fans downloaded the song without listening to it first. →

“Amazibelius”, an interactive audiovisual install…: http://youtu.be/xOpcwxSpzqo Nice looking audiovisual installation that projects computer genetated graphics inside famous Finnish art museum. I know the coder… Posted from WordPress for Android →

EDN magazine has a very good article series on audio electronics related to ground loop issues (issue I have written myself in this blog and my ground loop documents). The article series is based on material that has originally appeared in Linear Audio, a book-format audio magazine published half-yearly by Jan Didden. The G word: →

Here is something to think about this weekend: I thought that not very much new winds comes on HiFi field. But now I came by an interesting idea: current driven speakers instead of traditional voltage driven. EDN magazine has a nice two article series on this: Loudspeaker operation: The superiority of current drive over voltage →

This is a refreshing video teardown. EEVblog Tears into the White Van Speaker Scam:[Dave Jones] shows us just how bad audio equipment can get with his white van speaker scam teardown. Dave exposes the global White Van Speaker Scam and tears down a Marc Vincent Surround Sound Receiver, one of the items sold in Australia through →

http://spectrum.ieee.org/automaton/robotics/robotics-hardware/dynamic-vision-sensors-enable-high-speed-maneuvers-with-robots Posted from WordPress for Android →

Hackaday featured today LPT DAC circuit. Back in the olden days, around 25 years ago, sound cards were rare on PCs. One hack those days was the original Covox Speech Thing, that connected a simple DAC to to PC parallel port. The Covox Speech Thing (also known as Covox plug) was an external audio device →

http://pda.sciencealert.com.au/news/20142609-26244.html Posted from WordPress for Android →

Android devices can be used as signal generators and signal analyzers. It is easy when all you want is to get the signal out of the speaker or headphone connector, and you are happy to analyze what internal microphone in the device receives. But what if you want to feed some external signal into your →

Sound pressure level (SPL) or sound level is a logarithmic measure of the effective sound pressure of a sound relative to a reference value. It is measured in decibels (dB) above a standard reference level (20 µPa, which is usually considered the threshold of human hearing at 1 kHz). I have earlier used several different decibel →