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 →
There has been lately some interesting science new and product articles on special camera technologies: World’s Fastest Camera Takes 4.4 TRILLION Frames Per Second: Researchers in Japan have developed a motion picture camera that can take 4.4 trillion frames per second. The work was published in Nature Photonics. They call their technique “sequentially timed all-optical →
Is virtual reality hot or not? At this time it seems to be very hot again. In the wake of Facebook’s purchase of Oculus VR, can this revolutionary technology triumph anew? The Rise and Fall and Rise of Virtual Reality article is a good (long and detailed) overview of what virtual reality has been and →
http://techcrunch.com/2014/08/21/majority-of-digital-media-consumption-now-takes-place-in-mobile-apps/?ncid=twittersocialshare Posted from WordPress for Android →