Movies have been shot and displayed at 24 frames per second for over 80 years (before that silent films were filmed in somewhat lower frame rate somewhere between 16 and 18 frames per second). In 1927, when sound came along, the industry needed to agree on a motor-driven, constant camera speed. 35mm film stock is →
Board-level designers often have concerns about the proper way to handle grounding for integrated circuits (ICs) which have separate analog and digital grounds. Should the two be completely separate and never touch? Should they connect at a single point with cuts in the ground plane to enforce this single point or “Mecca” ground? How can →
The author of CNET’s The Audiophiliac blog recently asked, “Who wants perfectly accurate sound?” His answer? Most headphone and speaker buyers prefer less accurate sound reproduction. Consumer audio: Is accurate sound overrated? blog posting says this may be the case (although he doesn’t supply any real evidence to support this assertion). If so, so be →
Nowadays Internet if full of videos you can watch. Sometimes you might want to watch videos in place where you don’t have fast Internet connection. A good solution to this problem is to save the videos you want to your computer hard disk and view them from there. In many on-line video sites you can →
I saw an interesting writeup 100GbE To Slash the Cost of Producing Live Television at Slashdot. It tells that today live-produced TV is still largely a circuit-switched system. But technologies such as 100 Gigabit Ethernet and Audio Video Bridging hold the promise of removing a lot of of cable and thousands of connectors from a →
Nokia wanted to bring amazing presentation of the new Lumia phones. Particularly a good description of the amazing camera features. They announced a good looking demonstration video in Nokia Conversations blog post. Here is the video. It looks amazing when you view it. The video and pictures look really good, almost too good to be →
People seem to want their TV with more features, like internet ready, apps, web browser etc. All these extra features are basically already there on computers. Now they want a combination. The connected TV will evolve. Connected TV and voice remote control seems to be the direction TV makers are pushing their products to because →
I saw an interesting article at Controlgeek blog titled America’s Got Talent Buzzer Show Control. It tells how the judge buttons work in the “World’s Largest Talent Show”. Those buttons sound a loud buzzer sound effect, fire a bunch of strobes and light cues, and trigger video on large upstage video wall. Often on TV, →
I bought Fuji HS20 camera few months ago (just some months before the model was discontinued). HS20 is a pretty good superzoom digital camera. It has a very long zoom lens and good macro properties. I have taken many of the photos posted recently to this blog using this camera. To take good macro photographs →
A class-D amplifier or switching amplifier is an electronic amplifier where all power devices (usually MOSFETs) are operated as binary switches. They are either fully on or fully off. The term “class D” is sometimes misunderstood as meaning a “digital” amplifier. While some class D amps may indeed be controlled by digital circuits, the class →